Some of the amps you list are solid state. I'd look at Joilda Fusion or Jolida JD 3000A mono block tube amps. 

That said, I'd have a hard time not listening to the Pass Labs x250.5.

A pair of Emotiva XPA-1s could get a listen and if you don't like them send them back within 30 days for your money back. I doubt you would though.

I am using an Audio Research LS-26 preamp and a Bryston 3B-SST2 amplifier. The sound is really excellent.

I think that this particular Bryston model is the best in their line for great sound quality, and it has a LOT of power.

If you put it with the Classic SE preamp I think you will like the results.

The simple fact is that there are very few tube amplifiers that have excellent bass, and they are godawful expensive ($10K ++)

elem79 wrote:

Hi All, Maybe the kind memebers of Stereophile can help me narrow down an amplifier replacment. My speakers are PSB Synchrony One’s and in front I am using a Classic SE and MV-60SE.  I’m very happy, but want for better dynamics and a firmer grip on the low end.  I am in love with the CJ midrange, however I am unable to afford some of their loftier amplifier designs.  I have considered solid state amps like Pass and Parasound, but am afraid of that solid state edginess in the upper frequency range that a solid state amp might deliver and seem to prefer the sound of tubes. 

I have compiled a short list and would be very grateful for any advice on the subject.  On my short list:  

Rogue M-180 mono blocks (seriously considering)

CJ Premier 140 

Pass Labs X250.5

Quicksilver Silver 88

Parasound JC-1 (used, but still very expensive)

Thanks,

Eric