Need to buy used integrated about 800 dollars

You have some great speakers there. The VR-2 have tremendous bass response capability, but really benefit from an amp that can take control of the woofers.....giving you tight deep bass. Too bad about your NAD, I bet it really sounded great on the bass.

You may want to spend a little more $$$ for a Krell 400 integrated amp which should be a terrific match for the VR-2....400x2 into 4 Ohms.

I've never heard Plinius, but based on reviews/reputation, that may be a great match as well.

I would stay away from the Adcom 555 pre as it was considered pretty hard sounding in the upper mids.

Good Luck.

The AdCom Triple 5 series is what.....mid/late '80s vintage?

While you can argue about sound good/bad/harsh or whatever, fact is, it is getting a little long in the tooth and would have to be priced very attractively to get around the fact it can't go much longer without a Re-Cap.

Which would put you pretty much back at the C372 level, sans explosion!

Do you like the NAD house sound? Ready to move 'up'?

OH! One other thing::
You could get something like the Onkyo A-9555 'd' integrated NEW and still come in under budget. Good reviews, reasonable build and I think it even has a phono input, not that it sounds like that's an issue. It should run cool, too, which depending on installation, may be an issue.

Thanks , everyone for all the suggestions!
1st, I never really liked the sound of the NAD c372.
It did provide power to the low frequencies, but could not control it well enough.
A lot of the monitoring I do here is in direct comparison with the actual recorded source, so I can make direct comparisons.
Also the NAD was a little edgy in the highs.
I've auditioned the old adcom 555 before and it also left me a little cold, although it suffered a little less from dynamic constraints than the NAD.
There is a seller here, that has a YBA something, I forgot, but it appears (from the top hood removed) to be well designed and from ONLY the few reviews I've read, it is claimed to be (especially for the less than 1,000 dollar price) "nice" sounding and not lacking any one thing to an obvious degree. It's 100 watts, which is good for me re: watts vs price, etc.
80 or a hundred watts, or so, wouuld be nice - in Class A!
I did notice a SS Int. from Cayin that is interesting, but I keep hearing that it is lacking in bass... I find that hard to believe, unless one states the type of monitor in use. I might even look to buy one of those used. But for sure I will not continue with NAD.
Oh, I forgot to mention that the Caylin has a pair of Low-Impedance (on XLR) inputs. A nice feature for Pro audio.
Ideally, I would like to have:
80 watts minimum, good constuction, decent-to-good sound from a company with a good customer support record and low failure rate and even class A.
It may seem a lot to ask for the price, but still, with that in mind, I know I should be able to out do the NAD in most areas.
Thanks all, again and keep your comments and suggestions comming.

What about a used YBA YA201?