NAD M51 Direct Digital DAC Impressions
Nov 7, 2015 at 1:07 PM Post #1,487 of 1,623
Nov 11, 2015 at 11:00 PM Post #1,488 of 1,623
Hello all. I'm a recent M51 convert and just finished reading every comment in this thread. I chose to roll back to firmware version 1.39 and even reducing volume by 1 db to account for the fix did not mask the difference - it was clearly audible. So if you can, do.

And thanks to all for the education!
 
Nov 13, 2015 at 8:26 AM Post #1,490 of 1,623
Fortunately that is not the case - I checked with them because my serial number is 33M51xxxx. They said it would be fine. It's more a matter of what firmware you are running. If you are at 1.43 or higher you may have to roll back through prior versions to get to 1.39. 
 
Nov 14, 2015 at 9:38 AM Post #1,491 of 1,623
Fortunately that is not the case - I checked with them because my serial number is 33M51xxxx. They said it would be fine. It's more a matter of what firmware you are running. If you are at 1.43 or higher you may have to roll back through prior versions to get to 1.39. 


In fact it seems to be the series with the older Zetex DDFA chip that can be downgraded. The newer production runs have a newer model DDFA that cannot use the older versions

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Nov 21, 2015 at 7:46 AM Post #1,492 of 1,623
Looking to jump into the m51 fray. Curious if current owners adjust the fixed volume settings according to the headphone you utilize. E.g HD800 vs LCD2.2F (the two i would use with it)...and if anyone has thoughts on synergy with a Luxman P1u or Bryston BHA-1?

Any feedback, as always, is appreciated.
 
Jan 8, 2016 at 3:44 PM Post #1,494 of 1,623
Aside from the fact that there is only video pass-through on the M51, you are indeed correct in your assumption. When in standby there is no pass-through at all.

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Jan 9, 2016 at 8:28 AM Post #1,497 of 1,623
Same applies for the M12 + HDMI-1 MDC board (I just upgraded)

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Feb 2, 2016 at 3:32 AM Post #1,498 of 1,623
Hi , Yep there is interest. Well,.. you will have a definite buyer here.
It exactly suits my needs, HDMI inputs + co-ax+usb and  the colour matches my integrated valve hybrid amp.
I'm in South Africa, will pay shipping, prob about 140 USD.
Thanks
Neal
nrogers@iafrica.com
 
Feb 26, 2016 at 4:46 PM Post #1,499 of 1,623
New NAD M51 addition to the mix this week.  This is an interesting DAC.  Definitely laid back, vocals sounds a bit soft.  Edges seem blunted/rounded.  Might take me some getting used to coming from the Benchmark:)
 

 
Feb 26, 2016 at 5:35 PM Post #1,500 of 1,623
New NAD M51 addition to the mix this week.  This is an interesting DAC.  Definitely laid back, vocals sounds a bit soft.  Edges seem blunted/rounded.  Might take me some getting used to coming from the Benchmark:)


 

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