I purchased this integrated digital amplifier in December 2015. This amp was purchased to replace a Sugden integrated amp in our main living room. Long story short, we rebuilt a portion of our house in early 2016 and since then, my wife listens to music only in our second living room. So, this NAD amp has played about 15-20 hours and is not fully broken up yet.
Out of curiosity, I briefly tested the integrated in my main audio room, using my Apogee Duetta Signature speakers (86 db efficiency) and was really impressed by the clean dynamic sound coming out of this digital integrated amp. Please look at the Absolute Sound’s review and complete description of this amp:
The C 390DD is rated to deliver 150Wpc into 8 ohms. This amp is a real powerhouse, If you are looking to improve your music dynamics with solid bass and nice mid/high frequencies, this is the right amp.
The 390DD is a modular design. It has three rear-panel slots that will accept an optional input module (DD AP-1 Analog Line/Phono Module) or the module containing three HDMI inputs and one HDMI output (DD HDMI-1). These modules are available at NAD dealers for about $300 if needed.
Please note the unit for sale is the ‘stock version’ of the C 390DD, which only includes digital inputs; two digital coaxial on RCA jacks, one AES/EBU, USB Type B connector and a USB Type A and two TosLink optical.
Output power: 150Wpc into 8 ohms, 20Hz–20kHz, 0.005% %THD
IHF dynamic power: 165W into 8 ohms, 250W into 4 ohms
S/N ratio: >95dB referenced to 1W
Inputs: Two coaxial digital, two TosLink, one AES /EBU, one computer (USB Type B), two mass-storage input (USB Type A), IR, RS232
Optional I/Os: DD1 Analogue Phono Module with one balanced input on XLR jacks, one unbalanced input on RC A jacks, one phono input (mm or mc); DD HDMI-1 HDMI Module with three HDMI inputs and one HDMI output
Formats and resolutions supported: MP3/WMA/FLAC up to 48kHz (USB mass-storage inputs); USB output from Macintosh or PC up to 96kHz/24-bit (computer input); up to 192kHz/24-bit (TosLink, coaxial, AES /EBU)
Outputs: One coaxial digital, one TosLink digital, one line-level, one subwoofer
Dimensions: 17 1/8" x 5 3/16" x 15 5/16"
Weight: 17 lbs.
The retail price of the stock version of the 390DD was $2,600. Obviously, this unit is in excellent condition. Shipping in CONUS and Paypal fees included at asking price. Look at my Audiogon/Canuck Audiomart perfect feedback and buy with confidence.