Budget Audiophile Looking For Amplifier Suggestions

I would second the Sim recommendation, and add a couple things. One, that also an integrated Sim amp like an I-3, I-5, etc in that genre if Sim equipment in the early to late 2000's. Under $1500 for sure, and can be found for $1000-1200 with a couple months of patience. The watts on the Sim will say less than 120-150 watts, but the output power will be just as much, if not more with proper attention given to proper low end reproduction. 

Next, don't rule out the Naim gear. Same time period as above, similar prices, similar performance, but more emphasis in PRAT and less low end authority than the Sim gear. A 50 watt NAIM integrated will be as much power as a commercial product that rates its amps at 120-150 watts.  

 The good news is that you can't go wrong with either of them! 

I would suggest an Exposure Dual 4 regulated. 90 watts High current. Similar to Naim many prefer it. 1100 used gets their 2nd best amp. 5k retail. Super musical, fast open sound. Competes very well with newer amps. Maybe not as resolving as some of the 5-10k newer stuff but gives nothing up in musicality.

Bryston makes and did make in that period very solid reliable, neutral sounding amps. Very reasonable used.

I have had the McCormack DNA-125, the Odyssey Stratos and the Parasound A21. I have had a few other amps and I would say the Parasound is by far the best. BTW I know many have had a great experience with Odyssey, mine was a nightmare. If you are considering that brand I could tell you about all the problems I had by offline by email. I would not buy from Klaus again.

Adcom 555mk2, i think you can find them used for around 500. then in time send it to Musical design for upgrades. I owned the 555 and its a tank a real workhorse.