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

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 included leather case is of high quality and thoughtfully designed to accommodate a variety of cables and connectors, including bulkier 4.4mm plugs. Physical buttons are tactile and well-placed, with a subtle recessed design to prevent accidental presses.

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

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: Engaging and slightly colored sound with airy treble and punchy mid-bass. Offers a wide and tall soundstage with excellent layering and separation. Efficient and cooler in operation. Includes a dedicated 3.5mm line-out port.

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: Natural, organic sound with fuller sub-bass and smoother treble. Sounds more relaxed and musical compared to C201. Runs warmer and consumes more battery. Lacks dedicated line-out.

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.

Users praised the onboard software for its responsiveness and flexibility. However, idle power drain was noted – it's recommended to fully power off the device if not used for extended periods.

Battery Life

Battery performance is a critical factor for portable audio players, and the N6iii delivers up to 10 hours of continuous playback depending on the selected module and usage mode. The C201 is more battery efficient, while the E203 consumes more power in Class A or Hyper Mode.

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.

Many users appreciated its ability to drive both sensitive IEMs and power-hungry headphones like the Hifiman Arya or Sennheiser HD600 with ease, particularly when using the E203 in Hyper Mode.

The tactile controls, button layout, and case design also received high marks for their premium feel and practical design.

Conclusion

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.