Home Theater Systems Buying Guide
Product Information
Specifications
Specifications
Line Input/Pre Out
- THD (20Hz - 20kHz): <0.005% at 2V out
- Signal-to-noise raito: >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 ohms
- 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 60kHz
- Balance: -10dB
Phono Input/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)
- Maximum input signal at 1kHz: >80mVrms (ref. 0.1% THD)
- Frequency response: ±0.3dB (20Hz - 20kHz)
Line Input/Headphone Out
- THD (20Hz - 20kHz): <0.005% at 120mW
- Signal-to-noise ratio: >110dB (32 ohms load; A-weighted, ref. 500mV 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, DSD, FLAC, WAV, AIFF
- Native sampling rates: Up to 32bit/192kHz
- Bit depths: 16 - 24
BluOS
- Supported operating systems: Windows and Mac OS X
- 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: AptX HD wireless built-in
- Bluetooth connectivity: Two-Way (transmit and receivE)
- Network connectivity: Gigabit Ethernet RJ45, 802.11 b/g/n Wi-Fi
General
- Dimensions (W x H x D): 17 1/8" x 3 15/16" x 16"
- Weight: 22.3 lbs.
- Amazon Alexa compatibility
What's in the Box
What's in the Box:
- C 658 DAC BluOS Streaming DAC
- Manual
Reviews
Customer Reviews for NAD Electronics C 658 DAC BluOS Streaming DAC
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Dave again was a great salesman and very helpful. I could buy the preamp by mail catalog but to be able to go in a store, hear it, hear speakers and other audio gear is a huge plus. Support your local stereo stores in your area.

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Q&A
Customer Q & A
Have a functionality, compatibility, or otherwise product-specific question about this product? Ask it here! If you have a customer service or shipping question, please direct it to our customer service department
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- Mike K Staff on May 19, 2020
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- Mike K Staff on Feb 5, 2020
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- Mike K Staff on Aug 24, 2022
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- Mike K Staff on Mar 17, 2021