NAD C 658 Preamplifier BluOS Streaming DAC *graphite*

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Product details

The current millennium has changed the way we listen to and store music, shifting more towards streaming services rather than physical media. NAD responds to this transformation by introducing an entirely new type of hi-fi device, the C 658, which combines the functions of a network player, a high-quality DAC, and a traditional preamplifier. Additionally, its modular design ensures that the C 658 stays up to date with new technologies in the future. An HDMI 4K switch module is already available, allowing for the best possible sound quality from HDMI audio sources equipped with this connection, such as game consoles and video streamers. The C 658 also features Bluetooth aptX HD transmission, allowing you to effortlessly connect devices like Bluetooth headphones. Flexible outputs provide balanced connections for active speakers and amplifiers, while an adjustable crossover for the subwoofer and an MM Phono input for a turntable make it easy to connect classic analog devices.

The software side is powered by BluOS, the most advanced available operating system for streaming and multi-room audio. The C 658 integrates into the growing ecosystem of BluOS-compatible devices, capable of connecting up to 64 separate players. BluOS also allows the C 658 to easily integrate into a smart home as it is compatible with most significant home automation solutions. The system operates on most platforms, including Windows and Mac computers as well as iOS and Android mobile devices. A basic license for Dirac Live room correction is included, which corrects not only the frequency response but also the impulse response.

The C 658 belongs to the NAD Classic series, known for its enviable reputation among music lovers thanks to its excellent price-to-performance ratio. As typical for this collection, the C 658 offers straightforward performance and full value for money.

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Reviews & Ratings

Warranty score

How often does a product of this brand in the «Phono preamps» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • NAD
    Not enough data
  • 1.LD Systems
    0.4 %
  • 2.Pro-Ject
    0.8 %
  • Fosi Audio
    Not enough data

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • NAD
    Not enough data
  • Fosi Audio
    Not enough data
  • LD Systems
    Not enough data
  • Pro-Ject
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Unfortunately, we don't have enough data for this category yet.

Return rate

How often is a product of this brand in the «Phono preamps» category returned?

Source: Digitec Galaxus
  • NAD
    Not enough data
  • 1.LD Systems
    2.6 %
  • 2.Pro-Ject
    4.9 %
  • 3.Fosi Audio
    5.4 %
Source: Digitec Galaxus

Translation: machine translated
Overall ratingVery good92/100
Very good86/100
hifi.deSingle testReleaseSeptember 2023
  • PositiveClear, neutral sound across all inputs
  • PositiveStable, convenient BluOS streaming
  • PositivePowerful and upgradeable room measurement
  • NegativeUSB audio and HDMI ARC cost extra

BluOS streaming and Dirac room calibration in a fully-fledged analogue preamplifier: With the C 658, NAD is building an almost unrivalled device for discerning music fans who want to use separate power amplifiers or active speakers. USB audio and HDMI ARC can be retrofitted as modules - although this means more effort than installing the functions from the outset...

Very good100/100
Area DVD Logo
Area DVDSingle testReleaseMay 2021

For around EUR 3,700, the NAD combination is particularly convincing acoustically. The C 298 power amplifier and C 658 preamplifier perform extremely confidently, authentically and directly. Thanks to the neutral, homogeneous acoustic design, many loudspeakers can be connected to the NAD components...

Very good90/100
Audio TestSingle testReleaseApril 2021
  • PositiveOutstanding user-friendliness
  • Positiveversatile

    The C 658 streaming DAC combines everything you would expect from a device of its format: Very good workmanship, very easy handling and a stable, audiophile performance. Thanks to room correction via Dirac Live, the DAC can be customised to local requirements.

    Very good92/100
    i-fidelity.net Logo
    i-fidelity.netSingle testReleaseApril 2020

    Don't be fooled - the typical understated look of NAD's "Classic" line clearly undersells the C 658. This BluOS Streaming DAC is a component that literally has it all and is almost uniquely positioned on the market. The quality and convenience of the BluOS software and its high-class sonic realisation by the C 658 via its integrated D/A converter alone would have been worth the asking price...