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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.
FEATURES & DETAILS
- BluOS Network Streaming with MQA Decoding
- ESS Sabre DAC
- Dirac Live Room Correction*
- Gigabit Ethernet
- Dual Band Wi-Fi ac/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 module
- IR In with Learning Function
- Trigger Out/In
*These features will be implemented via future software upgrades. Note: The C 658 will include a license for Dirac Live with the option for advanced users to upgrade to a Dirac Live Full Frequency version.
SPECS:
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)
WARNING: California Residents - Proposition 65. This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov