The R3 series, in particular, has carved out a niche as an affordable yet capable digital audio player (DAP) for audiophiles on the go.  With the release of the HiBy R3 II 2025 Edition, priced at $179, HiBy aims to refine this formula further, introducing a new X1600E System-on-Chip (SoC), an overhauled user interface (UI), and promises of enhanced performance. This latest edition builds upon the strengths of its predecessor, refining its **sound quality, UI, and battery life** while maintaining HiBy’s signature features.

## Design and Build Quality

The **R3 II 2025 Edition** maintains the **sleek aluminum chassis** with **reinforced glass** on both the front and back panels. It weighs **118 grams** and measures **86.9 x 60.6 x 14.5 mm**, making it highly **portable and pocket-friendly**.

The device features a **3.2-inch touchscreen** with a resolution of **320x480 pixels**. While the **screen’s brightness and sharpness** are **adequate for navigation**, it doesn't quite match the clarity of higher-end models. The **well-constructed volume wheel**, which also acts as a power button, enhances usability.

For **headphone connectivity**, it includes:
- **3.5mm single-ended output**
- **4.4mm balanced output**

This ensures compatibility with a wide range of IEMs and headphones.

## Features and Connectivity
![r3_box_gradient.webp](https://bck.audiophilespot.com/uploads/r3_box_gradient_abd93f7e80.webp)

One of the standout features of the **R3 II 2025 Edition** is its **Wi-Fi streaming support**, allowing users to **access Tidal and Qobuz** without needing a separate device.

### **Key Features:**
- **Bluetooth 5.1** with **UAT, LDAC, and aptX** for high-quality wireless audio
- **USB DAC mode**, allowing it to function as an external DAC for computers
- **HiBy OS (Linux-based)**, providing a smooth, intuitive user experience
- **MageSound Eight Ball (MSEB) sound tuning**, allowing users to customize warmth, note thickness, and vocal prominence
- **MicroSD card slot**, enabling large music library support (note: no internal storage)

## Performance and Sound Quality
![set_r3_gradient.webp](https://bck.audiophilespot.com/uploads/set_r3_gradient_5153041cc1.webp)
At the heart of the **R3 II 2025 Edition** are **dual ESS ES9219C DAC chips**, delivering **high-resolution audio playback** with support for:
- **Native DSD256**
- **PCM up to 32-bit/384kHz**
- **4.4mm balanced output (340mW @ 32Ω)**

### **Sound Signature & Characteristics**
The **HiBy R3 II 2025 Edition** leans towards a **clean, natural sound signature with a subtle touch of warmth**, making it engaging yet detailed.

#### **Bass**
- **Tight, punchy, and well-controlled**, providing **satisfying impact without overshadowing the mids**
- **Sub-bass extension is present** but doesn’t dominate the signature

#### **Mids**
- **Slightly forward vocals**, ensuring **clarity and intimacy**
- **Instruments are well-separated**, with **natural tonality and detail**

#### **Treble**
- **Smooth and airy**, avoiding harshness while maintaining **decent extension**
- **No excessive sibilance**, making long listening sessions comfortable

### **Soundstage & Imaging**
- **Impressively wide for a compact DAP**, creating an immersive listening experience
- **Imaging is accurate**, with **instruments well-placed** in a moderately spacious sound field
- **Lacks the razor-sharp separation of higher-end models** but performs well for its size

### **Comparison with the Previous Version**
Compared to the **original R3 II**, the **2025 Edition** offers:
- **A darker background**, improving **instrument separation**
- **Better detail retrieval**, likely due to **enhanced SoC processing and clock precision**
- **More refined tonality**, making the overall sound signature **cleaner and more dynamic**

### **Power & Headphone Pairing**
The **R3 II 2025 Edition** excels with **IEMs and efficient headphones**. However, testing with the **Sennheiser HD660S2** revealed its **power limitations**:
- **Volume needed to be cranked to 75-80 on high gain** to reach a decent level
- **Lacks dynamics and bass authority** compared to desktop amplifiers

This means **power-hungry headphones will perform best with a dedicated amp**, while **IEMs and low-impedance headphones** will shine.

## Battery Life

The **HiBy R3 II 2025 Edition** boasts improved battery life, making it **more reliable for long listening sessions**:
- Single-ended (3.5mm): Up to 19 hours
- Balanced (4.4mm): Up to 16 hours
- Fast charging: Fully charges in under 2 hours via USB-C

This marks an improvement over the previous model, which **maxed out at 15 hours**.

## Comparison: Original HiBy R3 II vs. 2025 Edition

The original **HiBy R3 II was released in October 2023**. Below is a **comparison between the two models**:

| Feature            | HiBy R3 II (2023) | HiBy R3 II 2025 Edition |
|--------------------|------------------|-------------------------|
| **Processor (SoC)** | Ingenic X1000     | Upgraded to X1600E for better performance |
| **User Interface** | Standard HiBy OS  | Redesigned, more intuitive UI |
| **Output Power**   | 380mW @ 32Ω (Balanced) | 340mW @ 32Ω (Balanced) |
| **Battery Life**   | Up to 15 hours (SE) | Up to 19 hours (SE) |
| **Bluetooth Version** | 5.0 | 5.1 with improved stability |
| **Screen Resolution** | 320x480 pixels | Same resolution, improved responsiveness |

## Pros and Cons

### **Pros**
✅  Compact and lightweight design  
✅  High-resolution audio support** (DSD256, 32-bit PCM)  
✅  Wi-Fi streaming (Tidal, Qobuz)
✅  Customizable sound tuning (MSEB)
✅  Excellent battery life
✅  Balanced and single-ended outputs

### **Cons**
❌  Screen resolution & brightness could be better
❌  Occasional UI lag
❌  Lacks internal storage; microSD card required
❌  Not powerful enough for high-impedance headphones

## Conclusion
![r3_12.webp](https://bck.audiophilespot.com/uploads/r3_12_e9305c4897.webp)

The HiBy R3 II 2025 Edition is a **versatile and feature-rich DAP** that offers **exceptional value for its price**. It delivers:
- Great sound quality
- Strong wireless connectivity
- Extended battery life
- A refined and intuitive user experience

While it **struggles with power-hungry headphones** and could use a **higher-resolution display**, it remains an **outstanding choice** for audiophiles who want a **portable, high-quality music player**.

### **Who Should Buy It?**
🎵 **IEM users** & **efficient headphones**  
🎵 **Streaming enthusiasts (Tidal, Qobuz, etc.)**  
🎵 **Users who prefer a balanced & slightly warm sound**  

You can check out **detailed user reviews** and purchase the **HiBy R3 II 2025 Edition** at:  
- 🔗 [Official HiBy R3 Website](https://store.hiby.com/products/hiby-r3-ii)  
- 🔗 [Head-Fi Community](https://www.head-fi.org/showcase/hiby-r3-ii.26733/)  
- 🔗 [Aliexpress Listing](https://s.click.aliexpress.com/e/_oEWztmQ)  


HiBy R3 II 2025 vs. Original: What’s New in This Hi-Res Music Player?

In the realm of high-fidelity portable audio, the **ONIX Overture XM5** emerges as a noteworthy contender. Released in **mid-2024** at a price point of **$739 USD**, the XM5 signifies ONIX Audio's dedication to delivering audiophile-grade sound in a portable format. After extensive use in various settings, this review delves into its design, features, performance, and overall value proposition.

## Design and Build Quality
![onix2.webp](https://bck.audiophilespot.com/uploads/onix2_2f3295ecc0.webp)

The XM5 boasts a **CNC-machined aluminum chassis**, exuding both durability and elegance. Its dimensions are **115 x 70 x 19 mm**, and it weighs **275 grams**, offering a substantial yet portable feel. The front panel features a **3-inch square OLED touchscreen** with a **720p resolution**, ensuring vibrant visuals and clear readability. Complementing the touchscreen are four physical buttons and a **gold-plated volume wheel**, facilitating intuitive control and adding a touch of sophistication.

## Features and Connectivity
![onix_out.webp](https://bck.audiophilespot.com/uploads/onix_out_254db00895.webp)

### Audio Hardware
At its core, the XM5 is equipped with the **flagship ESS ES9039PRO DAC chipset**, renowned for high-resolution audio decoding. This is paired with dual **TPA6120A2 amplifiers**, delivering a powerful output of up to **1069mW at 32Ω** through the balanced output, ensuring compatibility with a wide range of headphones and in-ear monitors.

### Storage and Expansion
The device offers **128GB of internal storage**, supplemented by dual **microSD card slots**, each supporting up to **2TB**. This expansive capacity accommodates extensive high-resolution audio libraries.

### Connectivity
- **Outputs**: 
  - **3.5mm single-ended**
  - **4.4mm balanced**
  - **USB-C digital audio output** for external DACs

- **Wireless**:
  - **Wi-Fi (2.4G/5G)**: Supports **DLNA**, **AirPlay**, and **Tidal** streaming.
  - **Bluetooth 5.2**: Two-way connectivity with support for **LDAC**, **aptX HD**, **aptX**, **SBC**, and **AAC** codecs.

### Battery and Power
The XM5 houses a **7000mAh battery**, providing up to **14 hours** of playback on single-ended output and **12 hours** on balanced output. Charging is facilitated via a standard **USB-C port**.

## User Interface and Software
![onix_menu.webp](https://bck.audiophilespot.com/uploads/onix_menu_ad9a54a445.webp)

Operating on an **in-house developed system** powered by the **Ingenic X2000 platform**, the XM5 offers a streamlined and responsive user experience. The interface focuses on music playback, supporting:

- **Hi-Res file formats**: Up to **PCM 768kHz/32-bit** and **DSD512**.
- **Streaming**: Native **Tidal** integration over Wi-Fi.
- **Wireless protocols**: **DLNA** and **AirPlay** for versatile streaming options.

While the system is efficient, it lacks support for third-party applications, which may limit users seeking broader streaming service compatibility.

## Audio Performance
![onix_back.webp](https://bck.audiophilespot.com/uploads/onix_back_a9a551599d.webp)

The XM5 delivers a **warm and rich sound signature**, characterized by:

- **Bass**: Tight and controlled with substantial depth.
- **Midrange**: Clear and detailed, offering an engaging vocal presentation.
- **Treble**: Smooth and extended, free from harshness.

The soundstage is notably wide and spacious, with precise imaging. The device's high output power ensures it can drive both sensitive IEMs and more demanding over-ear headphones effectively.

## Practical Usage and Considerations


- **Build Quality**: The robust construction ensures durability, though the device may feel slightly hefty for some users.
- **Thermal Performance**: Prolonged use, especially with high-impedance headphones, can cause the device to become warm.
- **Battery Life**: While the battery offers substantial playback time, streaming and high-gain usage may reduce endurance.
- **Accessories**: A protective leather case is available but sold separately, which could be a consideration for users seeking comprehensive protection.

## Comparison with Competitors

At its price point, the XM5 competes with models like the **Astell&Kern SR25 MKII** and the **iBasso DX320**. Compared to these:

- **Pros**:
  - **Power Output**: The XM5 offers higher output power, suitable for a broader range of headphones.
  - **Sound Signature**: Its warm and dynamic presentation appeals to those preferring a rich tonal character.

- **Cons**:
  - **User Interface**: The proprietary system, while stable, lacks the flexibility and app support of Android-based competitors.
  - **Streaming Services**: Limited to Tidal, whereas others offer broader native streaming options.

## Conclusion

The **ONIX Overture XM5** stands out as a robust and high-performing portable audio player. Its combination of premium build quality, powerful audio performance, and expansive storage options make it a compelling choice for audiophiles seeking a dedicated music player. While it has some limitations in software flexibility and accessory inclusions, its core functionality and sound quality offer significant value in its class.

For a visual overview and further insights, consider watching the following review:

[ONIX Overture XM5 DAP Review - Portable Powerhouse](https://www.youtube.com/watch?v=-CX0_Shi_e8)


ONIX Overture XM5 Review: Wi-Fi-Enabled DAP with Audiophile-Grade Sound

A **Full Discrete R-2R DAC** is a type of digital-to-analog converter (DAC) that uses a network of discrete resistors to convert a digital signal into an analog signal. It is called **R-2R** because it utilizes only two values of resistors-one with resistance **R** and another with resistance 2R-arranged in a ladder-like structure.

In a **Full Discrete R-2R DAC**, each resistor is **separately implemented using high-precision discrete components** rather than integrated circuits (ICs). This gives designers control over resistor quality, matching, and layout, leading to potential improvements in sound quality.

---

## **Difference Between Full Discrete R-2R and Other DAC Types**
![dac-type-issues.webp](https://bck.audiophilespot.com/uploads/dac_type_issues_6c3ecdfd8d.webp)

| Feature | **Full Discrete R-2R DAC** | **IC-Based DAC (Sigma-Delta, Multibit, etc.)** |
|---------|----------------------|--------------------------------|
| **Design** | Uses discrete resistors and analog switches | Uses integrated circuits (ICs) with DSP |
| **Sound Character** | More natural, analog-like, smooth sound | Often detailed but can sound processed |
| **Linearity & Accuracy** | Requires precise resistor matching for accuracy | Uses internal digital processing to correct errors |
| **Dynamic Range & Noise** | Can achieve high dynamic range if built properly | High-end IC DACs have excellent noise performance |
| **Complexity & Cost** | Expensive, difficult to manufacture | More affordable and widely available |
| **Upgradeability** | Can fine-tune components for better performance | IC-based DACs are fixed designs |

---

## **Advantages of Full Discrete R-2R DACs**
1. **Natural Sound** – Many audiophiles prefer the smooth and organic sound of R-2R DACs.
2. **No Oversampling or Digital Filtering** - Unlike sigma-delta DACs, R-2R DACs can work without oversampling, preserving time-domain accuracy.
3. **Customization & Upgradability** - Designers can hand-pick resistors, power supplies, and circuit layouts to optimize sound.

## **Disadvantages of Full Discrete R-2R DACs**
1. **Expensive & Difficult to Manufacture** - High precision resistor matching is required to maintain accuracy.
2. **Performance Challenges** - Poorly implemented R-2R DACs can suffer from high Total Harmonic Distortion (THD).
3. **Size** - Requires more space than integrated DACs.

---

## **Digital Audio Players (DAPs) Featuring Full Discrete R-2R DACs**

### **Luxury & Precision P6 Pro**
![P6ProBlack_1.webp](https://bck.audiophilespot.com/uploads/P6_Pro_Black_1_2452799734.webp)

- **Description**: The P6 Pro utilizes a discrete R-2R DAC architecture equivalent to 16 PCM1704K chips, aiming to deliver high-fidelity audio.
- **Features**:
  - 3.5-inch touch-sensitive IPS screen
  - 64GB built-in storage with microSD expansion
  - Supports various audio formats, including APE, AAC, ALAC, FLAC, WAV, MP3, WMA, DFF, DSF, AIFF, and SACD-ISO
  - Outputs: 4.4mm balanced and 3.5mm unbalanced
  - Bluetooth 5.0 with LDAC, aptX HD, aptX, AAC, and SBC support
- **Review**: [Head-Fi Review](https://www.head-fi.org/showcase/luxury-precision-p6-pro-advanced-discrete-r-2r-portable-audio-player.26466/reviews)

### **HiBy RS6**
![rs6.webp](https://bck.audiophilespot.com/uploads/rs6_7d1255cc6d.webp)

- **Description**: The RS6 is HiBy's first portable R-2R DAP, featuring their proprietary Darwin audio architecture, which includes a discrete R-2R ladder DAC.
- **Features**:
  - Android-based operating system
  - 4.97-inch touchscreen display
  - Dual card slots for expandable storage
  - Multiple output options, including 4.4mm balanced and 3.5mm single-ended
  - Wi-Fi and Bluetooth connectivity
- **Review**: [SoundNews Review](https://soundnews.net/sources/daps/hiby-rs6-review-portable-r-2r-goodness/)

### **HiBy RS8**
![rs8.webp](https://bck.audiophilespot.com/uploads/rs8_0a784b1963.webp)

- **Description**: Building upon the RS6, the RS8 is HiBy's flagship DAP featuring an upgraded discrete R-2R DAC design for enhanced audio performance.
- **Features**:
  - High-resolution audio support
  - Enhanced internal components compared to the RS6
  - Requires a break-in period of at least 50 to 100 hours for optimal performance
- **Product Information**: [MusicTeck Product Page](https://shop.musicteck.com/products/hiby-rs8-android-hifi-audio-player-like-new)

### **HiBy RS2**
![rs2.webp](https://bck.audiophilespot.com/uploads/rs2_18abe76f04.webp)

- **Description**: The HiBy RS2 is a compact digital audio player featuring a full discrete R-2R DAC with HiBy's proprietary Darwin audio architecture.
- **Features**:
  - **Darwin Audio Architecture**: Discrete R-2R resistor ladder network with linearity compensation, adjustable FIR filter, harmonic controller, and Non-Oversampling (NOS) / Oversampling (OS) modes.
  - **HiByOS PureAudio Version**: A custom operating system optimized for pure audio playback.
  - **Compact Design**: 2.45-inch touchscreen, 90.3 x 64.8 x 18.8 mm size, and 158g weight.
  - **Dual MicroSD Card Slots**: Supports up to 2TB per slot.
  - **Multiple Output Options**:
    - 3.5mm Single-Ended Phone Output
    - 4.4mm Balanced Phone Output
    - 3.5mm Line Out
  - **USB DAC Functionality**: Can function as a USB DAC and supports coaxial digital output.
- **Battery Life**: 3500mAh battery provides ~10 hours of playback, ~3-hour charge time.
- **Sound Signature**: Smooth, organic, spacious, and highly musical.
- **Review**: [Headfonics Review](https://headfonics.com/hiby-rs2-review/)

### **Cayin R01 Module for N6ii**
![cayin_n6ii_01.webp](https://bck.audiophilespot.com/uploads/cayin_n6ii_01_3bae2022af.webp)

- **Description**: The R01 is a discrete R-2R ladder DAC/amp module designed for the Cayin N6ii DAP, offering an alternative to traditional DAC architectures.
- **Features**:
  - All-discrete resistor R-2R ladder DAC
  - Compatible with the N6ii DAP, allowing users to switch between different DAC/amp modules
- **Review**: [Twister6 Review](https://twister6.com/2021/07/30/cayin-r01-r-2r-dac-amp-module-for-n6ii/)

---

## **Conclusion**
A **Full Discrete R-2R DAC** prioritizes **natural sound quality and analog smoothness** over modern high-precision, high-resolution DAC chip solutions. While IC-based DACs are efficient and cost-effective, Full Discrete R-2R DACs remain a preferred choice for audiophiles seeking a unique, non-digital sonic signature.

These DAPs represent the latest in Full Discrete R-2R technology, catering to those who appreciate **high-fidelity, analog-like audio reproduction** in a portable form.


R-2R DAC vs Sigma-Delta: Which Digital Audio Player (DAP) Sounds Better?

The **HiBy RS2** is a portable **R2R digital audio player (DAP)** designed for audiophiles who want a warm, musical sound signature without breaking the bank. It follows the legacy of HiBy’s Darwin architecture, featuring an **R2R DAC**, a pure **Android-free** OS, and **HiByOS PureAudio** as the primary operating system. The RS2 is a spiritual successor to the R6 Pro but takes a different approach by focusing purely on **bit-perfect playback** rather than Android-based streaming.

## Specifications
- **DAC**: Darwin R2R Architecture
- **Display**: 2.45-inch touch screen (480x360 resolution)
- **Output Power**: 320mW @ 32Ω (Balanced)
- **Output Options**: 3.5mm single-ended, 4.4mm balanced
- **Battery**: 3500mAh (up to 10 hours playback)
- **OS**: HiByOS PureAudio (No Android)
- **Formats Supported**: FLAC, WAV, APE, DSD256, PCM up to 384kHz
- **Expandable Storage**: MicroSD up to 2TB (no internal storage)
- **Weight**: 165g

## Design and Build Quality
![side.avif](https://bck.audiophilespot.com/uploads/side_3e146b587d.avif)

The **HiBy RS2** is a compact, lightweight player that feels premium despite its relatively small size. It comes with a **CNC-machined aluminum body**, giving it a solid, high-end feel. The **leather case** included in the box adds a touch of class and protection. The 2.45-inch touchscreen is responsive, though small by modern standards, but it serves its purpose well since this device is mainly for music playback rather than multitasking.

### Physical Buttons & Controls
HiBy has kept the design simple with **physical playback buttons** on the side for volume control, play/pause, and track skipping. The **3.5mm SE and 4.4mm balanced ports** are positioned at the top, while the **USB-C charging and data transfer port** is at the bottom.

## Sound Quality
![back.avif](https://bck.audiophilespot.com/uploads/back_fe5f684946.avif)
### **Overall Signature**
The **HiBy RS2** delivers a smooth, analog-like presentation, thanks to its **R2R DAC**. Unlike delta-sigma DACs, R2R architecture provides a more **organic, musical, and natural sound**, making it an ideal choice for those who prefer a less clinical and more emotionally engaging listening experience.

### **Bass**
- Not the deepest or hardest-hitting bass, but very natural and textured.
- Mid-bass has warmth, making it great for acoustic and jazz music.
- Not ideal for bass-heads who prefer exaggerated low-end.

### **Mids**
- Beautifully **lush and rich**; vocals shine with excellent depth.
- Instruments sound organic, with no digital harshness.
- Perfect for **vocal-centric** genres like classical, jazz, and folk.

### **Treble**
- **Smooth and non-fatiguing**, but retains good detail.
- Slightly rolled off in the upper treble, which makes long listening sessions comfortable.
- No artificial sharpness or sibilance.

### **Soundstage & Imaging**
- **Wide and airy soundstage**, but not artificially exaggerated.
- Imaging is precise, with excellent instrument separation.
- Creates an immersive and natural stereo field.

## Features & Usability
![main-menu.avif](https://bck.audiophilespot.com/uploads/main_menu_b07fbfd4ce.avif)

- **HiByOS PureAudio** is fast and responsive, optimized purely for audio playback.
- **Darwin Audio Architecture** allows customizations like NOS (Non-Oversampling) and oversampling modes.
- **Parametric EQ and various filters** provide sound tuning flexibility.
- **No Wi-Fi or streaming apps**, making this purely an offline player.
- **Supports USB DAC mode**, allowing it to be used with a computer.

## Battery Life
With its **3500mAh battery**, the **HiBy RS2** delivers approximately **8–10 hours of playback** on balanced output and slightly more on single-ended. Given its power-efficient design, this is **respectable for an R2R-based DAP**.

## Pros & Cons
### **Pros** ✅
✔ Beautifully organic, natural sound thanks to R2R DAC  
✔ Compact and lightweight for an R2R DAP  
✔ Darwin architecture allows excellent sound customization  
✔ Balanced 4.4mm output with solid power  
✔ Well-built and premium-feeling  
✔ Physical buttons for easy control  
✔ Good battery life for an R2R device  
✔ No Android distractions—pure music focus  

### **Cons** ❌
✖ No streaming services (Tidal, Spotify, etc.)  
✖ No internal storage—requires a microSD card  
✖ Small touchscreen can be difficult to navigate  
✖ Slight treble roll-off may not suit detail lovers  
✖ Not the most powerful DAP—harder to drive full-size planar headphones  

## Who Should Buy the HiBy RS2?
The **HiBy RS2** is an excellent choice for **audiophiles who prioritize pure, musical sound over features and streaming**. It’s perfect for those who:
- Love **warm, analog-like** sound.
- Want a **compact and portable** R2R player.
- Prefer **physical buttons over touch-centric controls**.
- Don’t need Wi-Fi or streaming services and **focus on local playback**.

## Final Verdict
![all.avif](https://bck.audiophilespot.com/uploads/all_e322e11725.avif)

The **HiBy RS2** is a **refreshing alternative** to modern Android-based DAPs. Its **pure, offline music experience**, **smooth analog sound**, and **well-designed hardware** make it a great choice for those seeking **musical enjoyment over technical perfection**. If you want a no-frills **R2R DAP that sounds incredible** and don’t mind using microSD cards for your music, the HiBy RS2 is an **outstanding choice**.

HiBy RS2 DAP Review: Affordable R2R Sound for Audiophiles

The Colorfly C4 Pro holds a special place in the history of portable high-fidelity (hi-fi) audio. Released in the early 2010s, it was one of the first truly audiophile-grade portable players, setting a high bar for digital audio performance. With its retro-inspired wooden design, high-end DAC, and support for lossless formats, the C4 Pro remains an iconic device in the audiophile community.

This article explores why the Colorfly C4 Pro is still regarded as one of the most legendary hi-fi digital audio players (DAPs) ever made.

---

## Aesthetics & Build Quality  
![4c4.png](https://bck.audiophilespot.com/uploads/4c4_d8ba55d482.png)

One of the most striking aspects of the **C4 Pro** is its **vintage-inspired design**. Unlike the sleek, minimalist designs of modern DAPs, the **Colorfly C4 Pro** embraced a more **classic and rugged aesthetic**, featuring:  

- **Real wood paneling**, adding a unique, premium feel  
- **Retro analog-style buttons and volume knobs** for a tactile experience  
- **A brushed metal front panel**, giving it an industrial yet elegant look  
- **Distinctive gold-colored buttons** that enhance its vintage appeal  

While some found the design unconventional, for many, it was a perfect fusion of **hi-fi nostalgia and modern digital audio technology**.  

---

## High-End Audio Performance  
![3c4.png](https://bck.audiophilespot.com/uploads/3c4_1e4dc0ad3e.png)

At its core, the **Colorfly C4 Pro** was designed for **pure sound quality**, making it a true **audiophile-first** device. Here’s what made it stand out:  

### **1. High-Resolution Audio Support**  
The **C4 Pro** was ahead of its time, supporting:  
- **24-bit / 192 kHz PCM audio playback**  
- **Native FLAC, WAV, and APE file compatibility**  
- **A focus on lossless formats**, ensuring the best audio reproduction  

### **2. Premium DAC & Amp Section**  
The heart of the C4 Pro's sound was its **Cirrus Logic CS4398 DAC**—a chip still respected today for its warm and natural sound signature. Paired with a powerful **integrated headphone amplifier**, it could drive high-impedance headphones with ease, making it a great choice for serious audiophiles.  

### **3. Adjustable Digital Filters**  
The player featured **custom digital filters** that allowed users to fine-tune the sound to their preference—something rarely seen in portable players at the time.  

### **4. Dedicated Line-Out & Coaxial Output**  
Unlike many other early DAPs, the **C4 Pro** had a **true line-out** and **coaxial digital output**, making it possible to use the player as a high-quality digital transport for external DACs and amplifiers.  

---

## The Sound Signature  

The **Colorfly C4 Pro** wasn’t just about specs—it **sounded exceptional**. Many audiophiles described its sound as:  

✅ **Natural and analog-like**, with a warm and smooth presentation  
✅ **Rich, well-extended bass**, without being overpowering  
✅ **Lush mids**, making vocals and instruments sound lifelike  
✅ **Crisp, detailed treble**, without excessive sharpness  

Its **balanced and organic** tuning made it perfect for genres like **jazz, classical, acoustic, and vocal-centric music**.  

## Comparison With Modern Players

The **Colorfly C4 Pro** was a **revolutionary device in its time**, but how does it compare to modern players in the same price range?   

### **1. Shanling M3X**  

**Pros:**  
✅ **Modern touchscreen UI** with Android-based OS  
✅ **Dual DAC (ES9219C) for high-fidelity sound**  
✅ **MQA support and streaming services (Spotify, Tidal, Qobuz)**  
✅ **Balanced 4.4mm output for better headphone pairing**  
✅ **Great battery life (20+ hours in single-ended mode)**  

**Cons:**  
❌ Sound is slightly more analytical and less organic than the C4 Pro  
❌ Build is more modern but lacks the retro charm of the C4  
❌ Lacks the physical controls that many audiophiles appreciate  

**Verdict:** The **Shanling M3X** is an excellent modern alternative with **streaming and balanced output**, but for those who prefer **pure analog warmth**, the **C4 Pro** still has an edge.  

---

### **2. Hiby R3 Pro Saber**  

**Pros:**  
✅ **Compact and ultra-portable design**  
✅ **Dual ESS9218P DAC for a clean, detailed sound**  
✅ **MSEB digital equalizer for personal sound customization**  
✅ **Supports Bluetooth LDAC and UAT for wireless hi-fi audio**  
✅ **Great battery life (15-20 hours per charge)**  

**Cons:**  
❌ Sound is more analytical and "digital" compared to the C4 Pro  
❌ Lacks a dedicated **coaxial output** and true **line-out**  
❌ Lacks deep bass warmth compared to the Colorfly C4 Pro  

**Verdict:** The **Hiby R3 Pro Saber** is **fantastic for portability and wireless features**, but **the C4 Pro still wins in raw, natural sound quality**.  

---

## A Player That Stood The Test of Time  

Even in **2025**, the Colorfly C4 Pro remains an **icon** in the audiophile world. While modern DAPs boast **touchscreens, streaming, and powerful SoCs**, few have captured the **pure, unadulterated joy of listening** like the C4 Pro.  

Many enthusiasts still **treasure** this player, valuing its **raw, analog-like sound** over newer, more feature-packed alternatives.  

---

## Conclusion  
![5c4.png](https://bck.audiophilespot.com/uploads/5c4_b2379d4518.png)

The **Colorfly C4 Pro** wasn’t just an audiophile player—it was a **statement**. A device designed with **passion for sound**, offering a **unique retro design** and a **legendary sound signature**.  

Compared to modern **budget audiophile players** like the **Shanling M3X** and **Hiby R3 Pro Saber**, the C4 Pro **lacks modern features** but still **excels in sound quality and analog warmth**. If you seek **pure musicality over digital convenience**, the **Colorfly C4 Pro remains one of the greatest DAPs ever made**.  

💿 **A true legend in the world of hi-fi audio.** 🎵  


Colorfly C4 Pro: The Legendary Audiophile DAP That Defined Hi-Fi

The FiiO Echo Mini is a retro-inspired portable music player designed for audiophiles and casual listeners alike. Combining modern technology with a nostalgic aesthetic, this compact device is packed with features such as dual CS43131 DACs, a 4.4mm balanced output, and support for Hi-Res audio formats. Whether you're a fan of its sleek design or its exceptional audio performance, the Echo Mini aims to deliver an impressive listening experience for music enthusiasts on the go.

## **Specifications**

| Feature               | Specification                                 |
|-----------------------|---------------------------------------------|
| **Dimensions**        | 80mm x 54.5mm x 14.5mm                         |
| **Weight**            | 50g                                         |
| **Display**           | 1.99-inch IPS color display (170x320 resolution) |
| **DAC Chip**          | Dual CS43131 DAC supporting Hi-Res Audio     |
| **Outputs**           | 3.5mm unbalanced, 4.4mm balanced            |
| **Bluetooth**         | Bluetooth 5.3                               |
| **Supported Formats** | MP3, AAC, FLAC, WAV, DSD, M4A, OGG          |
| **Battery Life**      | Up to 15 hours                              |
| **Charging Port**     | USB-C                                       |
| **Build Material**    | PC + ABS engineering plastic with metal paint finish |
| **Storage**           | 8GB internal, microSD up to 256GB           |

---

## **Design and Build Quality**  
![back.png](https://bck.audiophilespot.com/uploads/back_52bdeb3166.png)

The FiiO Echo Mini is a testament to minimalistic elegance. It boasts a compact, lightweight design that is perfect for portability. The body is made of PC + ABS engineering plastic with a metal paint finish, offering a balance between durability and aesthetics. Rounded edges and a smooth matte finish make it comfortable to hold and visually appealing. Its minimal button layout and retro-inspired design evoke a sense of nostalgia, though some users might find the lack of tactile feedback on the buttons slightly disappointing.

---

## **Hardware and Performance**  
The FiiO Echo Mini is powered by dual CS43131 DAC chips, a configuration that delivers high-fidelity audio with excellent dynamic range and low distortion. These DACs provide support for Hi-Res Audio formats, ensuring pristine playback quality for everything from MP3s to FLAC and DSD files. The inclusion of both 3.5mm unbalanced and 4.4mm balanced outputs caters to a wide range of headphones, including high-impedance models, with enough power to drive them effectively. Connectivity is seamless with Bluetooth 5.3 and USB-C, offering versatility for both wireless and wired setups. The device excels in handling higher bit rates without compromising on stability, making it a strong contender in the portable DAC market.

---

## **Audio Capabilities**  
![top.png](https://bck.audiophilespot.com/uploads/top_52f3efc96a.png)

The Echo Mini excels in delivering crisp, balanced sound. Bass is punchy without overwhelming the mids, and the highs are clear and detailed, making it suitable for a variety of genres. Its ability to drive high-impedance headphones with ease is particularly impressive for a device of its size. The inclusion of a 4.4mm balanced output provides audiophiles with more listening possibilities and improved signal-to-noise ratio. However, the lack of LDAC support might be a downside for some users seeking the absolute best in wireless audio quality. Noise floor and distortion levels are impressively low, ensuring a clean listening experience even at high volumes.

---

## **User Interface and Experience**  
Operating the FiiO Echo Mini is straightforward. The device incorporates a simple set of retro buttons for operation, bringing back nostalgic feelings. Its 1.99-inch IPS color display with a resolution of 170x320 offers vibrant visuals, including a retro-inspired UI that mimics cassette tape players. Pairing via Bluetooth is quick and reliable, and the LED indicator provides helpful feedback on connection status and battery levels. While the minimalist interface is intuitive for most users, beginners might need to refer to the manual for certain features like switching between DAC modes or output settings. The absence of app-based control might limit advanced customization options for some users.

---

## **Battery Life**  
The Echo Mini offers an impressive battery life of up to 15 hours on a single charge, making it ideal for long listening sessions or daily commutes. With USB-C charging, it takes around 1.5 hours to reach full capacity. The large 1100mAh battery allows for extended playback times, even when driving high-impedance headphones. This makes it a reliable companion for both casual and audiophile listeners.

---

## **Reception and Reviews**  
![1734079345492.png](https://bck.audiophilespot.com/uploads/1734079345492_ebdb6a13e4.png)

The FiiO Echo Mini has received generally favorable reviews from the audiophile community. Critics have praised its robust audio quality, retro-inspired design, and versatility, though some have noted the absence of certain premium features like LDAC and a dedicated app. User feedback highlights its portability, ease of use, and nostalgic design as major strengths. Many consider it a strong contender in the budget-friendly portable DAC market, particularly for its balanced sound and extensive format support.

---

## **Conclusion**  
The FiiO Echo Mini is a compelling choice for those seeking high-quality portable audio without breaking the bank. Its excellent design, solid performance, and balanced sound profile make it an excellent companion for casual listeners and audiophiles alike. While it lacks a few premium features found in higher-end models, it delivers exceptional value for its price point. The retro-inspired design, dual DACs, and robust connectivity options ensure it stands out as a versatile and nostalgic addition to any audiophile's collection.



FiiO Echo Mini Review: High-Quality Audio on the Go

The Cayin N6iii is the latest addition to Cayin’s lineup of portable digital audio players (DAPs), succeeding the acclaimed N6ii. With its modular design and advanced audio capabilities, the N6iii aims to set a new benchmark in the world of high-resolution portable audio. Let’s dive into its features and performance to see what makes this player stand out.

## Design and Build Quality

The Cayin N6iii boasts a sleek and modern design with a robust aluminum chassis that exudes premium quality. The 4.97-inch touchscreen display dominates the front, providing crisp visuals and a responsive touch experience. The device is slightly larger than its predecessor, but the ergonomic design ensures comfortable handling.

The modular design is a standout feature, allowing users to swap audio motherboards for different sound signatures and capabilities. This modularity adds versatility and longevity to the device, making it a great investment for audiophiles.

## Hardware and Performance

Under the hood, the N6iii is powered by an Octa-Core Qualcomm Snapdragon 665 processor, coupled with 6GB of RAM. This hardware combination ensures smooth operation and quick navigation through menus and applications. The device runs on a customized version of Android, giving users the flexibility to install third-party apps like streaming services.

Storage is expandable via an SD card slot, supporting cards up to 2TB. This ensures ample space for high-resolution audio files, which can often take up significant storage.

## Audio Capabilities
![N6iii_main_gradient_background.png](https://bck.audiophilespot.com/uploads/N6iii_main_gradient_background_766e526366.png)

The Cayin N6iii’s audio performance is where it truly shines. It comes equipped with the C201 audio motherboard, featuring eight Cirrus Logic CS43198 DAC chips arranged in a fully differential configuration. This setup delivers exceptional clarity, detail, and a wide dynamic range.

The player supports all major high-resolution audio formats, including DSD512, PCM 32-bit/768kHz, and MQA. It offers balanced and unbalanced outputs, ensuring compatibility with a wide range of headphones and in-ear monitors.

Additionally, the modular design allows users to experiment with different motherboards, tailoring the sound to their preferences. This level of customization is a rare feature in the portable audio market.

# Cayin N6iii Available Modules

The Cayin N6iii features a modular architecture, enabling users to swap audio motherboards to customize the device's sound signature and capabilities. As of January 2025, the following modules are available:

## 1. C201 Audio Motherboard

- **DAC Configuration**: 
  Features eight Cirrus Logic CS43198 DAC chips arranged in a parallel full-differential matrix.
  
- **Volume Control**: 
  Utilizes a high-precision cascade volume control system with four Nisshinbo NJU72315 chips, ensuring smooth and accurate volume adjustments.
  
- **Amplification**: 
  Employs four Texas Instruments OPA1622 operational amplifiers in a parallel configuration for robust headphone amplification.
  
- **Sound Characteristics**: 
  Delivers excellent transparency and layering with an airy quality, coupled with powerful dynamics and tight, deep bass response.

---

## 2. E203 Audio Motherboard

- **DAC Configuration**: 
  Incorporates the ESS Technology ES9039Pro DAC chip, known for its high dynamic range and low distortion.
  
- **Amplification Modes**: 
  Offers Dual Amplifier Operation (DAO) with three selectable modes:
  - **Class A**
  - **Class AB**
  - **Hyper Mode**

  This allows users to customize the amplification to their listening preferences.
  
- **Sound Characteristics**: 
  Provides a refined and detailed sound signature, catering to audiophiles seeking precision and clarity in their audio playback.

---

These interchangeable modules enhance the versatility of the Cayin N6iii, enabling users to adapt the player to different audio preferences and requirements. The modular design ensures that the device can evolve with future technological advancements, offering a customizable and future-proof audio solution.


## User Interface and Experience

The N6iii’s Android-based interface is intuitive and user-friendly. The 4.97-inch touchscreen is bright and responsive, making navigation effortless. The inclusion of streaming apps such as Tidal and Spotify is a welcome addition, catering to modern music consumption habits.

The player also features Bluetooth 5.0 with support for high-quality codecs like LDAC and aptX HD, making it a versatile device for both wired and wireless audio setups. Wi-Fi connectivity ensures seamless updates and access to online content.

## Battery Life

Battery performance is a critical factor for portable audio players, and the N6iii delivers up to 10 hours of continuous playback. While this may not be the longest in its class, it’s sufficient for most use cases. The device charges via USB-C, with support for fast charging to minimize downtime.

## Reception and Reviews

The N6iii has been well-received by both critics and users. Reviewers have praised its build quality, modular design, and stellar audio performance. The flexibility offered by interchangeable audio motherboards has been particularly highlighted as a game-changer for audiophiles.

Some criticisms have been directed at its relatively high price point and slightly bulky design. However, these are minor drawbacks compared to the overall performance and features of the device.

## Conclusion
![N6iii_stehend_2000px.jpg](https://bck.audiophilespot.com/uploads/N6iii_stehend_2000px_30f3e61368.jpg)
The Cayin N6iii is a feature-packed digital audio player that caters to serious audiophiles. Its modular design, high-performance hardware, and exceptional audio quality make it a standout choice in the portable audio market. While it may not be the most budget-friendly option, its versatility and premium build quality justify the investment.

If you’re looking for a DAP that combines cutting-edge technology with unparalleled audio customization, the Cayin N6iii is an excellent choice.


Cayin N6iii Review: The Ultimate Modular Digital Audio Player for Audiophile

The HiBy R4 is a portable digital audio player (DAP) that has garnered attention for its blend of advanced features, distinctive design, and affordability. Priced at $249, it offers a compelling option for audiophiles seeking high-quality sound without a premium price tag.

# Design and Build Quality

The R4 stands out with its cyberpunk-inspired aesthetic, featuring angular edges and a robust aluminum alloy chassis. Available in multiple color options, including black, silver, green, and orange, it caters to diverse stylistic preferences. The device measures 129.6 x 68.3 x 18.5 mm and weighs 231 grams, making it both portable and substantial in hand. A 4.7-inch high-definition LCD touchscreen provides user-friendly navigation, while an LED status indicator above the screen displays different colors based on the audio sampling rate, adding a functional yet stylish touch.

# Hardware and Performance

Under the hood, the HiBy R4 is powered by a Qualcomm Snapdragon 665 processor, paired with 3GB of RAM and 32GB of internal storage, expandable via a microSD card slot supporting up to 2TB. It runs on an open Android 12 operating system, allowing users to install a variety of applications from the Google Play Store. The device supports dual-band WiFi (2.4GHz and 5GHz) and Bluetooth 5.0 with two-way communication, accommodating various high-definition Bluetooth codecs, including UAT, LDAC, aptX, aptX HD, AAC, and SBC.

# Audio Capabilities

The R4 boasts a quad-DAC setup featuring four ES9018C2M DAC chips, enabling high-resolution audio decoding with support for PCM up to 32-bit/768kHz and native DSD256. This configuration ensures exceptional sound quality with low distortion and high signal-to-noise ratio. A notable feature is its Class A amplification, utilizing four OPA1652 and two OPA1612 operational amplifiers, delivering up to 525mW of power at 32\u03a9 via the 4.4mm balanced output. This setup provides ample drive for a wide range of headphones and in-ear monitors.

# Sound Quality Across Different Music Genres

One of the standout features of the HiBy R4 is its versatility across a wide range of music genres. The device\u2019s audio tuning and robust hardware enable it to deliver an immersive listening experience tailored to diverse musical styles:

### Classical Music

The HiBy R4 excels in reproducing the subtle nuances and intricate details of classical music. The quad-DAC setup ensures accurate tonal balance, with clear separation between instruments. String sections sound lush and vibrant, while the device\u2019s wide soundstage captures the ambiance of orchestral performances.

### Jazz

For jazz enthusiasts, the R4 delivers a warm and inviting sound signature. Saxophones and trumpets resonate with a natural timbre, while the bass is tight and well-defined. The Class A amplification brings out the dynamics of live jazz recordings, making it feel like you\u2019re right in the room with the performers.

### Rock and Metal

The HiBy R4\u2019s ability to handle complex audio makes it a great choice for rock and metal. The dual amplification setup ensures that electric guitars and drum kits retain their power and energy without sounding distorted. Vocals are forward and clear, ensuring an engaging listening experience.

### Electronic and Pop

For electronic and pop genres, the R4\u2019s precise bass reproduction and high-frequency clarity shine. The player\u2019s ability to handle fast transients ensures that synths and beats sound crisp and impactful. The MSEB (MageSound Eight-Ball) feature allows users to fine-tune the sound profile to match their preferences, adding more depth and punch where desired.

### Hip-Hop and R&B

The R4\u2019s strong bass response is particularly enjoyable for hip-hop and R&B fans. Sub-bass frequencies are handled with authority, providing a deep and satisfying rumble without overwhelming the mids. Vocals and harmonies remain smooth and detailed, adding to the richness of the overall sound.

# User Interface and Experience

Running on Android 12, the HiBy R4 offers a smooth and responsive user experience. The interface is intuitive, and the device supports system-wide bit-perfect audio, bypassing Android's native sample rate conversion to maintain audio fidelity across all applications. Users have praised the device for its user-friendly interface and the ability to customize sound profiles through features like the MageSound Eight-Ball (MSEB) and parametric equalizer (PEQ).

# Battery Life

Equipped with a 4500mAh battery, the R4 offers up to 11 hours of continuous playback, depending on usage and output settings. However, some users have reported that the device can become warm during extended use, particularly when utilizing the balanced output at higher volumes, which may impact battery performance.

# Reception and Reviews

The HiBy R4 has received generally positive reviews from both critics and users. Reviewers have commended its build quality, distinctive design, and audio performance, particularly noting its neutral and clear sound signature. The inclusion of features like Class A amplification and a quad-DAC setup at this price point has been highlighted as offering significant value. However, some critiques have been directed at the device's battery life and the potential for it to become warm during prolonged use.

# Conclusion

In summary, the HiBy R4 presents a compelling option for those seeking a feature-rich, high-performance digital audio player at an accessible price. Its combination of advanced audio components, user-friendly interface, and distinctive design make it a noteworthy contender in the mid-range DAP market. With its ability to excel across diverse musical genres, the R4 is a versatile choice for audiophiles and casual listeners alike.


Amp/DAC/DAP