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C658

NAD C658 - BluOS Streaming DAC / Preamplifier
C658
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The NAD C 658 is a new kind of stereo component, one that at once changes preconceptions and opens new possibilities for audio reproduction. You see, there has never before been a component offering such a rich palette of both new and proven technology. Bold statements? Read on...
 

Redefining the Architecture of Hi-Fi Playback

As we move deeper into the 21st Century the way music is distributed and enjoyed continues to evolve away from physical media to streaming. It also has moved away from analog to digital. The C 658 has incorporated these fundamental truths to create an entirely new type of component that combines a Network Streamer, a state-of-the art DAC, and many aspects of the traditional Preamplifier into a single highly cost effective package. And thanks to NAD’s exclusive Modular Design Construction, it will keep pace with the latest technology, not yet introduced, but inevitably coming in the future. In fact, an optional HDMI 4k switcher module is available now allowing the best sound from any of the many HDMI sources available (like game consoles and video STBs). While the C 658 immediately replaces (or adds) your Streamer, DAC, and Preamp, it also adds many new features you may not be aware of, like a Bluetooth aptX HD transmitter to use with your wireless headphones. The highly flexible outputs allow for a true balanced connection to powered speakers or amplifiers. Single-ended connections for amplifiers and subwoofers are also provided and include an adjustable subwoofer crossover executed perfectly in the digital domain. A highly sophisticated MM Phono input is also included along with line inputs for legacy analog components.

BluOS™ Enabled

Also on board is BluOS, the most sophisticated High Res streaming system available. BluOS natively supports over 15 streaming music services and indexing of over 250,000 tracks from local network sources. The C 658 becomes a node in the BluOS ecosystem allowing high res network streaming to 64 zones and control options for iOS, Android, Windows, and Mac OS phones, tablets, and desk top devices. BluOS also supports all major smart home controllers and is available in a wide range of products making it easy to create a whole house audio system with the C 658 at its heart.

Traditional NAD Performance and Value

The C 658 is part of our Classic Series of components which have an enviable reputation for giving Music Lovers more enjoyment for less money. If you want a solid block of hand–crafted aluminium with gold plated accents you’ll need to look elsewhere. If you want state-of-the-art performance and features in a sturdy no-nonsense package then you have the right address.
 

High Resolution in Every Detail

Most NAD components have been High Res for 45 years with very wide bandwidth, low distortion, and ultra-low noise. We just never had High Res source material to play. With High Res digital recording and streaming, combined with advanced technology like MQA, record companies are opening their vaults and releasing Studio Master Quality recordings. MQA decoding is available through BluOS Streaming content. The C 658 is pure High Res from input to output and features the ESS Sabre 32bit DAC , one of the best performing DACs on the market today with its 118dB Dynamic Range and incredibly low jitter spec. All preamp functions are executed in the digital domain including the same wide range non-truncating digital volume control used in our Masters Series components. This offers an incredibly short analog signal path that, rather uniquely, is identical for all volume settings. Sophisticated active power supplies provide super clean voltages to all circuits to keep noise and distortion at the edge of measurability.

Make the Speakers Disappear (It’s Not Magic)

The C 658 is also the first NAD stereo component to feature Dirac Live room correction*, the most sophisticated and effective room correction available. Dirac corrects the impulse response of your speakers, in addition to the frequency response of your room, for a truly transparent window into the musical performance. When the room resonances are tamed and the transient response is corrected, the result is magical. You have never heard your speakers sound this invisible or this good!

*Note: The C 658 includes a license for Dirac Live with the option for advanced users to upgrade to a Dirac Live Full Frequency version.

Master Quality Authenticated

Master Quality Authenticated (MQA) is a revolutionary end-to-end technology built into every BluOS Enabled amplifier to capture and deliver MQA music to your speakers in the purest quality. All BluOS Enabled players and systems include a powerful decoder and audio renderer for the millions of the MQA encoded songs, The MQA logo shown in the BluOS app indicates that the unit is decoding and playing an MQA stream or file, and lets you know that you are hearing exactly what the artist recorded and approved in the studio.

 

A wireless streaming winner

It's to think of a streaming source the NAD C 658 can't handle. It's compatible with popular services like Spotify®, Deezer, TIDAL, and Napster, as well as Qobuz. It also plays free internet radio stations from TuneIn Radio and iHeartRadio. Built-in BluOS software means you can create a wireless multi-room audio system with Bluesound wireless speakers. And there's two-way Bluetooth with aptX HD, for playing audio content from your phone or connecting to wireless headphones.

It's also a preamp

If you have a few wired components you'd like to bring into the system, the C 658 has two coaxial digital and two Toslink optical inputs for digital sources. There are a couple of stereo analog RCA inputs, too. And vinyl lovers can use the dedicated phono input to connect any turntable with a moving magnet cartridge. If you keep digital files on a networked storage device, you can select songs using the BluOS mobile app, or you can plug a USB thumb drive into the USB port on the back.
 

A free app with advanced control options

Operate your system via Wi-Fi® using the BluOS Controller app with your Apple® or Android™ device, or your Windows® or Mac® computer. It gives you flexible control over your music system, letting you access, control, and stream music to different BluOS-enabled zones. Synchronise multiple audio zones, or stream different music to different zones at the same time. You can even use your Apple Watch to control your system.

 

Features:

  • Connects to your home network via wired Ethernet or Wi-Fi for music streaming
    • includes support for Spotify, Deezer, TIDAL, Qobuz, Slacker, Radio Paradise, Napster, Murfie, and Calm Radio
    • free internet radio from TuneIn Radio and iHeartRadio
  • Two-way Bluetooth streaming with aptX HD
  • BluOS compatibility for further expansion with Bluesound wireless speakers
    • free BluOS controller app for iOS®, Android, Windows, and Mac OS X
  • Compatible file types: MP3, AAC, WMA, OGG, WMA-L, FLAC, ALAC, WAV, and AIFF
    • supports high-resolution playback (up to 24-bit/192kHz resolution)
  • 2-way Bluetooth® with high-quality aptX HD coding for playing Bluetooth sources or connecting to wireless headphones and speakers
  • Built-in dual-band Wi-Fi
  • Works with Amazon Alexa-compatible voice control assistants
  • Dirac Live® Lite Room Correction software included for a Windows or Mac computer
    • full version upgrade available (sold separately); offers full-bandwidth frequency correction and works on 2 computers
Connections:
  • Ethernet port for wired connection to a home network
  • 2 unbalanced stereo analog RCA inputs
  • Phono input for turntables with moving magnet cartridges
  • 2 Toslink optical digital audio inputs
  • 2 coaxial digital audio inputs
  • Unbalanced stereo analog RCA preamp output
  • Balanced stereo analog XLR preamp output
  • Dedicated analog output for powered subwoofer
  • USB Type A input for connecting a USB memory stick or compatible hard drive
  • IR and 12-volt trigger connections for use with external controllers
  • 1/4" stereo headphone output on front panel
 

What's in the box:

  • BluOS Streaming DAC
  • AC power cord
  • Remote control (SR9)
  • 2 "AA" batteries
  • 2 Antennas
  • Auto calibration microphone
  • USB microphone adapter
  • Quick Setup Guide
  • Internet Update Guidelines
  • Warranty Card
  • BluOS brochure
  • Dirac Live brochure
General
Signal to Noise Ratio 110dB
THD 0.005%
Number of Inputs 7
USB Connections 1x Type-A (rear)
Network Connections RJ45 Gigabit Ethernet
Wi-Fi 5 (802.11 ac/n)
Phono Inputs 1 (MM)
Preamp Outputs Balanced XLR
Unbalanced RCA
2x Subwoofer
Network Streaming Services BluOS Built-In
Bluetooth Receive and Transmit
AirPlay Compatible Yes

Dimensions
Width  435mm
Height 100mm
Depth  405mm
Weight  10kg
C658 
Data Sheet

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C658 
Manual

pdf-icon-843-498
C658 
Quick Start Guide

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C658 
White Paper

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AV System Integrator 3-976

***if you are interested in having this model professionally installed, please contact us for an authorised Dealer/Installer in your region

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Control Integration drivers are available here for most major Automation and Smart Home Control Systems:   
NAD Control Integration Drivers 

 
  • CONTROL4
  • CRESTRON
  • URC
  • RTI
  • LUTRON
  • PUSH
  • IPORT
  • ELAN
OTHER
  • BluOS Integration Utility
  • BluOS Simple API Document
  • NAD to Pronto
  • PC Interface Software
  • RS232 Test Program
  • HTR Remote Interface

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ABOUT US

We are a business made up of passionate people who love their music, movies and everything related. Working with our nationwide network of A/V professionals we supply high-performing products offering a real point of difference and truly enhance our customers' lives. We are fortunate enough to have worked with some of the industry's best people and brands and have learnt a lot from the experience - if you're interested, there is more to the story.

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