Description
NAD C 658 DAC Preamp
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.
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)
- 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)
