SOLD my NAD M51, I am the original owner. I purchased this in Dec 2013, it was my introduction to computer audio. I have the original box and remote control. Firmware is the favorite 1.39. If needed I believe I can also supply on a usb drive firmware 1.41 and 1.43. Condition is excellent with no visible marks that I can see on the top, front or side panels. It came into my system and has been in my rack since day 1.
ASKING PRICE $999, I will pick up paypal fees and pay Conti USA Shipping, ground. If you want insurance, and you do, thats on you
I had this dac sounding just excellent in my system and up sampled all music to 24/176 or 24/192 depending on which filter I used in HQPlayer. I have purchased a dac that can up sample or play DSD so I no longer have need for this Dac. Perhaps its most versatile use would be a perfect partner in a 2.0 audio/video set up as it has HDMI in and HDMI pass thru out.
Dac is located in E. Tennessee if you want to hear how wonderful this dac can sound I would welcome any visitors. Combined with an AQ jitterbug and up tone regen the sound became really special.
Here's a link to mfg webpage
http://nadelectronics.com/products/masters-series/M51-Direct-Digital-DACand a link to Stereophile's review of unit
http://www.stereophile.com/content/nad-m51-direct-digital-da-converter#P8dHSizsw5FV9OJj.97A couple of lousy phone photos below

