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
- 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
- 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
- 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
Customer Reviews for NAD Electronics C 658 DAC BluOS Streaming DAC
5.0 / 5.0
Welcome to the future of Music
So after much painful deliberation I took the leap and purchased the NAD C658, there was not a ton of information review wise out there so I was nervous making a large purchase like this sight unseen seeing the last time I bought something like this I took a few of my favorite CD's to the local Stereo shop and conducted a proper audition with knowledgeable folks I know and trust. Unfortunately those days are long gone. Luckily this is one fantastic piece of stereo equipment that has a ton future proof technology with the expansion ports and software updates. The sound quality is better that anything I have ever owned, and the use of it is so convenient and setup was easy. I have ripped my entire collection to FLAC and plugged the drive into the back of the unit, Bluos loaded everything right up for immediate use. I later setup Tidal and here is were things really got good, streaming Tidal Masters is a game changer better than CD quality at a tap of the tablet and everything is lightning fast change songs in an instant, functionality has exceeded my expectations. I will be keeping Tidal after the free trial and all of their music starts at 16/44.1 FLAC so full CD quality and up this has totally changed how I listen to music all of the disc are gone and will be selling them off. I have been using the wireless connection with no issues what so ever streaming which was a concern for me going in but no issue at all. Getting a bit older my taste in music has evolved and having Tidal keeps me from ever having to purchase music again which could have easily exceeded the cost of this unit a win, win if there ever was one. Rock On! or maybe Jazz....
May 28, 2019
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
Browse 3 questions Browse 3 questions and 3 answers
What is the difference between this unit and the c 368 with Bluos installed? Looking for an amp that can do it all. Not convinced the M10 is a solution either.
Thanks for your question. All are BluOS and DACs. The C658 is a Pre Amp only, requiring connection to an amplifier to drive speakers. The C368 is a complete receiver with provisions for two pair of speakers and 80 watts per channel. The M10 is also a complete receiver, 100 watts per channel, 1 pair of speakers and a multi functional front panel display. A read of the full specifications of each unit will detail each units full capabilities. The C368, at the price, is a capable High Resolution receiver. The M10 adds more power, more options, and an informative front panel screen.
Is this unit ROON ready?
Thanks for you question. NAD is not currently ROON ready.
does the unit now ship with dirac or are we still waiting?
C658 does include DIRAC