The Naim Classic Series streamers—ND5 XS 2, NDX 2, NS333 and ND 555—represent the pinnacle of digital audio performance. Designed for audiophiles seeking uncompromising sound quality, these network players offer extensive compatibility with a wide range of systems and components.
This guide provides a clear overview of product compatibility across the Classic Series, helping you integrate your streamer seamlessly into your hi-fi setup.
1. DAC and Audio Architecture
Each model in the Classic Series features a high-performance DAC architecture:
Model | DAC Type | Upgradeable via External PSU |
ND5 XS 2 | Burr-Brown PCM1791A | No |
NDX 2 | Burr-Brown PCM1792A | Yes (NPX 300, XPS DR, or NAPS 555-DR) |
NSS 333 | Burr-Brown PCM1792A | Yes (NPX 300, XPS DR, or NAPS 555-DR) |
ND 555 | Burr-Brown PCM1704K | Must be used with NAPS 555-DR |
Note: The ND 555 is designed to be used with at least one 555 PS DR power supply, with the option to add a second for ultimate performance.
2. Streaming and Network Compatibility
All Classic Series streamers support both wired Ethernet and Wi-Fi connections and are compatible with the following streaming services and protocols:
They also support multiroom streaming with other Naim products.
3. Digital and Analogue Outputs
Output Type | ND5 XS 2 | NDX 2 | ND 555 |
RCA Analogue | Yes | Yes | Yes |
DIN Analogue | Yes | Yes | Yes |
BNC Digital (S/PDIF) | Yes | Yes | Yes |
Optical Digital | Yes | Yes | Yes |
Coaxial Digital | Yes | Yes | Yes |
Tip: For best performance, use the DIN output when connecting to a Naim amplifier.
4. Control and App Integration
All models are fully compatible with the Focal & Naim App (iOS and Android), offering:
They also benefit from RF remote control and front panel navigation (NDX 2, NS333 and ND 555 only).
5. USB and Storage Devices
Each streamer includes a USB port for local music playback:
Supported formats include FAT32 and NTFS. USB drives can be used for direct playback or as part of a local music library.
6. System Automation and Integration
All of our streaming sources support System Automation, allowing control of compatible Naim amplifiers via the Focal & Naim App and a physical connection to the preamplifier or integrated amplifier via 3.5mm mini jack, where compatible. This automation includes:
Additionally the NSS 333 and the NAC 332 preamplifier may be linked wirelessly, enabling additional system automation features such as standby synchronization and preamplifier volume readout on the NSS 333’s display.
The ND 555, NSS 333, NDX 2 and ND5 XS 2 support IP control for integration with home automation systems such as Control4 and Crestron. Visit www.intrinsicdev.com/brands/naim for more information.
Conclusion
The Naim Classic Series streamers are engineered for flexibility, performance, and seamless integration. Whether you're building a reference-level system with the ND 555, seeking upgrade potential with the NDX 2, or enjoying streamlined excellence with the ND5 XS 2, each model offers broad compatibility with modern and legacy audio components.
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