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NAD - The C658 + C268 Pack

by NAD
$3,599.00
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The C658 + C268 Pack

C 658 - BluOS Streaming DAC

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. 

Introducing the NAD C 658

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 aluminum 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.

LINE INPUT, PRE-OUT

  • THD (20Hz – 20kHz)
  • <0.005% at 2V out
  • Signal-to-Noise Ratio
  • >106dB (IHF; A-weighted, ref. 500mV out, unity gain)
  • Channel separation
  • >80dB (1kHz)
    >70dB (10kHz)
  • Input impedance (R and C)
  • 22 kohms + 100pF
  • Maximum input signal
  • >4.5Vrms (ref. 0.1% THD)
  • Output impedance
  • Source Z + 240 Ohm
  • Input sensitivity
  • 93mV (ref. 500mV out, Volume maximum)
  • Frequency response
  • ±0.3dB (20Hz – 20kHz)
  • Maximum voltage output – IHF load
  • >4.5V (ref. 0.1% THD)
  • Tone Controls Treble
  • >±7.0dB at 20kHz; Bass: ±7.0dB at 60Hz; Balance: -10dB

PHONO INPUT, AUDIO PRE-OUT

  • THD (20Hz – 20kHz)
  • <0.01% at 2V out
  • Signal-to-Noise Ratio
  • >84dB (200 Ohm source; A-weighted, ref. 500mV out)
    >76dB (MM cartridge source, IHF; A-weighted, ref. 500mV out)
  • Input sensitivity
  • 1.44mV (ref. 500mV out, Volume maximum)
  • Frequency response
  • >±0.3dB (20Hz – 20kHz)
  • Maximum input signal at 1kHz
  • >80mVrms (ref. 0.1% THD)

LINE INPUT, HEADPHONE OUT

  • THD (20Hz – 20kHz)
  • <0.005% at 1V out
  • Signal-to-Noise Ratio
  • >110dB (32 Ohms loads; A-WTD, ref. 2V out, unity gain)
  • Frequency response
  • ±0.3dB (20Hz – 20kHz)
  • Channel separation
  • >>60dB at 1kHz
  • Output impedance
  • 6 Ohms

DAC

  • Supported audio file formats
  • MP3, AAC, WMA, OGG, WMA-L, ALAC, OPUS
  • High resolution audio formats
  • MQA, FLAC, WAV, AIFF, Supports converted DSD playback via the BluOS desktop app (only)
  • Native sampling rates
  • up to 32bit/192kHz
  • Bit depths
  • 16 – 24

BluOS

  • Supported operating systems
  • Plays music from network shares on the following desktop operating systems: Microsoft Windows XP, 2000, Vista, 7, 8 to current Windows Operating Systems and Mac OS X versions
  • User interface mobile operating system
  • luOS – Free Android and iOS App available online at Google Play and Apple App store
  • Supported cloud services
  • Spotify, Amazon Music, TIDAL, Deezer, Qobuz, HDTracks, HighResAudio, Murfie, JUKE, Napster, Slacker Radio, KKBox, Bugs
  • Free internet radio
  • TuneIn Radio, iHeartRadio, Calm Radio, Radio Paradise
  • Bluetooth quality
  • Bluetooth aptX HD wireless built-in
  • Bluetooth connectivity
  • Two-Way (Transmit and Receive)
  • Network connectivity
  • Gigabit Ethernet RJ45
    WiFi 5 (802.11 ac/n)

DIMENSIONS AND WEIGHT

  • Dimensions (W x H x D)**
  • 435 x 100 x 405mm (17 1/8 x 3 15/16 x 16)
  • Shipping Weight
  • 10.1kg (22.3lb)

C 268 - Stereo Power Amplifier

A remarkably affordable stereo amplifier, the NAD C 268 has features and technology unmatched by other amplifiers in its class. Designed for multiple stereo setups, the C 268 can be used in a variety of scenarios, including traditional stacks with a preamplifier or for bi-amping your favourite loudspeakers. The NAD C 268 is even bridgeable, seamlessly transforming its bountiful output from 80 x 2 to an outstanding 300 watts. Although the C 268 may appear to be a straightforward power amplifier, this Classic Series amp is brimming with rich features that will elevate your system.

NAD C 268 Stereo Power Amplifier

Amazing Flexibility

As with every amp in the Classic Series, we here at NAD have carefully thought through all the possible use cases and strategically chosen the most essential of features. Thanks to selectable balanced inputs, the C 268 is a natural mate for high-end preamps and processors. These inputs include a trim control useful for matching with other components, or for use in bi-amping speakers. A line out allows further addition of power on the same channel for extra speakers or subwoofers. On top of all this connectivity is a bridge switch that turns the C 268 into an amazingly powerful Monobloc amplifier.

You can also pair the C 268 with the NAD C 368 Hybrid Digital DAC Amplifier, and with both units bridged for mono, 300 watts per channel of distortion-free sound become available for your listening pleasure. The C 268’s auto-sense feature with selectable threshold is perfect for automating complex systems or for hiding the amp out of sight in a cabinet. Included with the C 268 is a ground lug that is very useful for eliminating ground loops and noise in complex multi-unit systems.

Getting the Basics Right

As a member of NAD’s Classic Series, the C 268 delivers a richly satisfying sonic performance thanks to its “music-first” features. Accurate channel balance, proper input and output impedance characteristics, and low noise circuits all come together within this one stereo power amplifier. Additionally the C 268’s line inputs, both balanced and single-ended, can accommodate all kinds of analogue source components by offering ideal input impedance traits with linear ultra-low-noise buffer amplifiers to prevent any sonic degradation caused by unfitting loading of the source device.

Sophisticated Power

Having moved away from old fashioned linear power supplies and Class AB output stages, NAD has developed even better performing circuits based on switch mode power supplies and Class D output stages. Once thought to be inferior to traditional topologies, NAD’s advanced work in this area has resulted in some of the best performing amplifiers regardless of basic design principle. The overall design of the C 268 is very linear over a wide bandwidth, providing dramatic advances over previous models with consistent performance into all speaker loads.

The power supply of the C 268 is capable of nearly 200 watts continuously and over 500 watts instantaneously, allowing for short term musical transients. NAD’s innovative asymmetrical PowerDrive fully utilizes every last watt available with its vast reserves of dynamic power available to accurately reproduce the most demanding music without distortion or compression. It can also operate with any AC mains voltage from 100V to 240V, and provides pure DC power to all the various stages of the C 268. This highly efficient supply also provides near perfect regulation of voltage across a wide range of conditions and provides a solid noise-free foundation for the amplifying stages.

The C 268 uses a customised version of the proven Hypex UcD output stage. This allows for massive power with nearly immeasurable distortion and noise in the audible range. Every detail of this design has been carefully crafted and perfectly executed to wring out ever last drop of performance.

    Amplifier

    • Continuous output power into 8 and 4 Ohms(Stereo mode)
    • 80W (ref. 20 Hz-20 kHz at rated THD, both channels driven)
    • Continuous output power into 8 Ohms (Bridge mode)
    • 300W (ref. 20 Hz – 20 kHz at THD 0.03%)
    • THD (20 Hz – 20 kHz)
    • <0.03 % (250 mW to 80 W, 8 Ohms and 4 Ohms)
    • IHF dynamic power (Stereo mode, at 1 kHz 1 % THD) 8 Ohms
    • 120W
    • 4 Ohms
    • 200W
    • 2 Ohms
    • 250W
    • Damping Factor
    • >100 (ref. 8 ohms 20 Hz – 20 kHz)
    • Input Sensitivity (for 80 W in 8 Ohms)
    • 750mV/50kohms
    • Frequency Response
    • ±0.3 dB (20 Hz – 20 kHz)

    General

    • Standby power
    • <0.5W
    • Unit Dimension (WxHxD) – Gross
    • 435 x 100 x 390 mm
    • Net weight
    • 7.3 kg (16.1 lbs)
    • Shipping weight
    • 8.7 kg (19.2 lbs)