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Product Description

Line Circle
NAD C658 Stereo Preamplifier, Network Media Streamer, DAC

Features & Specs Line Circle

BluOS Network Streaming with MQA Decoding
ESS Sabre DAC
Dirac Live Room Correction
2-way Qualcomm aptX HD Bluetooth
INPUTS
4-Digital & 3pr. Analog including Phono (MM)
OUTPUTS
Stereo XLR, Stereo RCA & Subwoofer
BluOS Network Streaming with MQA Decoding
ESS Sabre DAC
Dirac Live Room Correction
2-way Qualcomm aptX HD Bluetooth
INPUTS
4-Digital & 3pr. Analog including Phono (MM)
OUTPUTS
Stereo XLR, Stereo RCA & Subwoofer

Expert Insight

Line Circle

The NAD C 658 is one of the most fully furnished, future-proofed and intuitive streamers we’ve come across – and at this sub-£2000 price, one of the most convincing performers. It puts a big, bold tick in a great number of boxes. Nice work, NAD.

Expert Img
WHAT HI*FI?

Details

Line Circle

NAD C658 Stereo Preamp Network Media Streamer

What do we call it? Stereo Preamplifer, Network Media Streamer or Digital-to-Analog Converter?

The answer is all of the above!

  • BluOS Network Streaming with MQA Decoding
  • ESS Sabre DAC
  • Dirac Live Room Correction
  • Gigabit Ethernet
  • Dual Band Wi-Fi a/c/n
  • 2-way Qualcomm aptX HD Bluetooth
  • 2 x MDC Slots for Future Expansion
  • MM Phono Input
  • 2 x Line Inputs
  • 2 x Optical Inputs
  • 2 x Coax Inputs
  • Balanced Preamp Output
  • Preamp Output
  • Stereo Subwoofer Output
  • High Current Headphone Out
  • USB socket for adding optional wireless output moduleTrigger Out/In
  • IR In with Learning Function

Upgradable/Customizable

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).

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 frptions 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.

Master Quality Authenticated (MQA)

Master Quality Authenticated (Mom local network sources. The C 658 becomes a node in the BluOS ecosystem allowing high res network streaming to 64 zones and control oQA) 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 MindicaQA logo shown in the BluOS app tes 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.

NAD C658 Specifications:

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): 22k ohms + 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: -10dBTHD (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

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: BluOS – 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: aptX HD wireless built-in

Dimensions (W x H x D): 17.1 x 3.9 x 16”

Shipping Weight: 22.3 lbs

Reviews

Line Circle
Product Descriptiondown arrow

Product Description

Line Circle
NAD C658 Stereo Preamplifier, Network Media Streamer, DAC
Features & Specsdown arrow

Features & Specs Line Circle

BluOS Network Streaming with MQA Decoding
ESS Sabre DAC
Dirac Live Room Correction
2-way Qualcomm aptX HD Bluetooth
INPUTS
4-Digital & 3pr. Analog including Phono (MM)
OUTPUTS
Stereo XLR, Stereo RCA & Subwoofer
BluOS Network Streaming with MQA Decoding
ESS Sabre DAC
Dirac Live Room Correction
2-way Qualcomm aptX HD Bluetooth
INPUTS
4-Digital & 3pr. Analog including Phono (MM)
OUTPUTS
Stereo XLR, Stereo RCA & Subwoofer
Expert Insightdown arrow

Expert Insight

Line Circle

The NAD C 658 is one of the most fully furnished, future-proofed and intuitive streamers we’ve come across – and at this sub-£2000 price, one of the most convincing performers. It puts a big, bold tick in a great number of boxes. Nice work, NAD.

Expert Img
WHAT HI*FI?
Detailsdown arrow

Details

Line Circle

NAD C658 Stereo Preamp Network Media Streamer

What do we call it? Stereo Preamplifer, Network Media Streamer or Digital-to-Analog Converter?

The answer is all of the above!

  • BluOS Network Streaming with MQA Decoding
  • ESS Sabre DAC
  • Dirac Live Room Correction
  • Gigabit Ethernet
  • Dual Band Wi-Fi a/c/n
  • 2-way Qualcomm aptX HD Bluetooth
  • 2 x MDC Slots for Future Expansion
  • MM Phono Input
  • 2 x Line Inputs
  • 2 x Optical Inputs
  • 2 x Coax Inputs
  • Balanced Preamp Output
  • Preamp Output
  • Stereo Subwoofer Output
  • High Current Headphone Out
  • USB socket for adding optional wireless output moduleTrigger Out/In
  • IR In with Learning Function

Upgradable/Customizable

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).

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 frptions 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.

Master Quality Authenticated (MQA)

Master Quality Authenticated (Mom local network sources. The C 658 becomes a node in the BluOS ecosystem allowing high res network streaming to 64 zones and control oQA) 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 MindicaQA logo shown in the BluOS app tes 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.

NAD C658 Specifications:

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): 22k ohms + 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: -10dBTHD (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

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: BluOS – 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: aptX HD wireless built-in

Dimensions (W x H x D): 17.1 x 3.9 x 16”

Shipping Weight: 22.3 lbs

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Reviews

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