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NAD Electronics continues to lead the charge in the digital high-resolution domain, recently developing two key components; the NAD Master Series M10 BluOS integrated DAC/amplifier and the C 658 Streaming DAC (sans amplifier).

C 658 Streaming DAC Front

For those unfamiliar with BluOS network streaming, (or perhaps you live under the preverbal audio rock), the proprietary, multi-room operating system developed under the Lenbrook brand, has been included in these new models.

Further, and perhaps just as exciting is the integration of DIRAC Live Room Correction software. In for review is the C 658 which comes with a license for DIRAC Live with an option to purchase an advanced, full frequency spectrum version.

C 658 Streaming DAC Top

The C 658 Streaming DAC can be used as a stand-alone preamplifier in your system with both digital and analog inputs, (including a MM phono input), or in your system as purely a DAC/streamer. And if that weren’t enough, NAD incorporated their MDC, Modular Design Construction, by providing empty hardware slots which allow for future hardware upgrades, like an HDMI 4k switcher.

NAD C 658 BluOS Streaming DAC Specifications
  • THD (20Hz-20kHz) <0.005% at 2V out
  • Frequency Response ±0.3dB (20Hz – 20kHz)
  • Tone Controls
  • DAC supports MP3, AAC, WMA, OGG, WMA-L, ALAC, OPUS
  • High-Resolution formats MQA, FLAC, WAV, AIFF, converted DSD via BluOS app
  • Native Sampling Rate up to 32bit/192kHz
  • BluOS Operating System
  • Bluetooth, Bluetooth AptX HD wireless
  • Internet Radio
  • Both Balanced and Single-Ended Preamp Outputs
  • Dual Single-Ended Subwoofer Outputs
  • Dimensions 17 1/8” wide X 3 15/16” high X 16” deep
  • Weight 22.3 lbs.
  • MSRP $1,499

C 658 Streaming DAC