Threshold, Levinson, Bryston, Krell, ?others? used amps

Under 2k good luck.

Parasound A21, makes my Maggie's sing. Very happy with it.

Krell KSA 200 s
or FPB 200 if you are stateside and can find one it they both fit your requirement. If needed Krell can do a restoration on the Units. Bar none IMHO The best Ive owned

+1 Parasound A21

I had a Mod Squad Quad 405 for over 25 years after having a stock 405 for about 8 years (Mod Squad's Steve McCormack later became McCormack Audio),  a Bryston 8B for several years which was more powerful and slightly more detailed, replaced it with an Edge M6 which was deeper and fuller in the bass and just a little more dynamic and live sounding than the Bryston, and then bought a used pair of Nuforce Reference 9 V3 SE mono amps that are 175 watts/channel.  The Nuforce amps were very detailed, dynamic, with very good bass, with no etch in the highs--a very nice step up in all ways from what I had.  I liked them so much I had TDSS's Bob Smith do the level 3 upgrades to them.  The circuits were not changed, but the power supplies and several other things were--they are now super amps.  I got the Nuforce amps for $1400 used from the original owner.  I've now heard these upgraded amps with 5 totally different but excellent speakers and it was the best each of those owners speakers had ever sounded by a significant margin.  You could buy the amps and later, if you desired, have TDSS do the upgrades when you had more money.  The Nuforce amps already sound very good with a wide variety of speakers--and you'd have a possible end game set of amps if you did the upgrades to them.

Bob