Stay away from the nad

I bet if approached right,  NAD will take care of it.

BTW, the OP mentioned he’s going to order an Accuphase E-270. That integrated amp, as far as I can tell, is a gem that sells for around $4500. With that kind of budget many excellent IA would be options, but the Accuphase is certainly one of them.

Interesting that the Nad C356BEE goes for around $750 new. Quite the budget increase!  I asked the OP earlier which speakers he was using, now I'm more curious because the  Accuphase E-270 might be too much if they are a small bookshelf.

"blue cap" C272 and it is a very nice sounding solid state amp with gobs of power and dynamics, never a glitch.
c356 year and a half and no issues except the power led flickers.  not happy with the sound of the C356 though.  

avanti1960

Try C356 with the ZU Wylde (well broken in / 150 hours) short Interconnects
for Pre / Amp. You will like the sound. Much more details

213runnin

Yes, It's quite a step up but what else to buy. I tried Parasound Halo and it just didn't sound right. C356 with the right Pre/Amp interconnects sounded better then Halo or I just like the nad sound despite the reliability. Another option is Belles Aria Integrated but I am not familiar with the Aria's sound. If it has Nad's dynamic I would buy Aria right away.
And yes, I have PSB Synchrony One B bookshelf speaker that I really like.
I listened the PSB with the Accuphase E-470 and that was it. Just perfect sound. I just hope that E-270 has similar sonic signature as the E-470. My friend who owns the Accuphase told me that E-470 besides the more power has more 3D sound but the E-270 already provide very nice sound and that I would notice the difference in sound only with the high end speakers.