Best used amp in the $1500 range

Perkadin, since you mention class A amps, I'm wondering if an older Plinius SA100 mkI or mkII might work well here.

I've never heard a Plinius amp so I can't comment, but I've found that in general, class A amps are able to convey the smallest details of a recording clearly and audibly without making your ears bleed when things get loud, and everyhing has such weight behind it. Each sound has a degree of physicality that makes the experience much more 3d and emmersive. They really work well for home theater and music. The downside of course is size, expense, heat... so they aren't for everyone.

Perkadin, I was able to borrow a Pass Aleph 3 class A amp for a month a few years ago and can attest to its ability to render delicate inner detail. I have never heard acoustic guitars sound so beautiful and real on my system even when I owned a high powered SET.

What's the story on these new digital amp's (Nuforce) I've been reading about. From just reading they sound almost too good to be true. Any of you guys hear thes amps? If so, how do they compare? Do the have the weight of the Class A amp's that you've mentioned?

I thought the Channel Islands amps sounded excellent. I heard them at Dusty Vawters and again at RAMF. Very impressive amps, the 200 being a bit better than the 100. Also, I hear Ric at EVS has a killer amp at a very reasonable cost. I believe both these products have a 30 day trial. It might be worth a listen in your system.