The NAD C 658 BluOS Streaming DAC Preamplifier redefines modern hi-fi by combining high-resolution streaming, advanced digital conversion, and precise analog control in one powerful component. Featuring BluOS multi-room streaming with full MQA decoding, the C 658 delivers studio-quality audio from services like TIDAL, Qobuz, and more. At its core, an ESS Sabre DAC ensures exceptional clarity, detail, and dynamic range for a truly immersive listening experience.
With Dirac Live® Room Correction, the C 658 optimizes sound to your space, delivering accurate, balanced audio tailored to your environment. Flexible connectivity includes MM phono input, multiple digital and analog inputs, balanced preamp outputs, and dual subwoofer outputs, making it ideal for both digital and vinyl systems. Dual MDC expansion slots provide future-proof upgradeability, while built-in Wi-Fi, Ethernet, and aptX HD Bluetooth ensure seamless wireless streaming. Designed for audiophiles seeking performance and versatility, the NAD C 658 is a premium streaming DAC preamp for today’s connected audio systems.
*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.
NAD C 658 BluOS Streaming DAC Preamplifier
- $2,599.00
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The NAD C 658 BluOS Streaming DAC Preamplifier redefines modern hi-fi by combining high-resolution streaming, advanced digital conversion, and precise analog control in one powerful component. Featuring BluOS multi-room streaming with full MQA decoding, the C 658 delivers studio-quality audio from services like TIDAL, Qobuz, and more. At its core, an ESS Sabre DAC ensures exceptional clarity, detail, and dynamic range for a truly immersive listening experience.
With Dirac Live® Room Correction, the C 658 optimizes sound to your space, delivering accurate, balanced audio tailored to your environment. Flexible connectivity includes MM phono input, multiple digital and analog inputs, balanced preamp outputs, and dual subwoofer outputs, making it ideal for both digital and vinyl systems. Dual MDC expansion slots provide future-proof upgradeability, while built-in Wi-Fi, Ethernet, and aptX HD Bluetooth ensure seamless wireless streaming. Designed for audiophiles seeking performance and versatility, the NAD C 658 is a premium streaming DAC preamp for today’s connected audio systems.
*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.
- 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.
- 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)
PRODUCT INFORMATION:
Model: C 658 | Barcode: 5786357000091
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