Pass XA 25 or Bryston 3B3?

What amp are you using now, and what are you looking to improve.  What aspects of sound and system performance are most important to you?

Upgrading from an Adcom  555.

The Adcom is the weak link in the system, results in some unnatural brightness and hardness to the sound.  Also less dimensional.

Temporarily using a Krell from my other system largely cured those problems. However I want to avoid another 150 pound heat generating (12 amps continuous draw for the Krell) monstrosity in this smaller listening environment.

Also want to limit cost to less than $4K and no tubes.

Thanks again.

12A continuous?? Wow.

I am a big fan of Nelson Pass, but his Class A amps put out LESS as the speaker impedance drops. Check the specs on your speakers and see if the impedance drops, especially in the low frequency region. Any drops below 6 ohms or so will work against the Pass amp. Too Bad!  You might check out the Strake Sound AD4.320. A great amp (check Google for a review by "Home Theater something or other") and it's on sale at 40% off for Black Friday. I just ordered one. Over 200 wpc available for Stereo into 2 ohms!