Class A\B or D for summer months (vs Class A)

This is a case where you might like a Coda A/B which tend to run very cool, but are still linear amps.

I'm not against Class D at all, I just can't imagine going from Pass with it's own signature to any Class D amp and being thrilled.  I'll be interested in reading how your listening goes.

The Atmasphere GaN amp was designed by a foremost tube amp designer and can be found used on hifishark in your price range if you’re patient.  Best of luck. 

You shouldn’t be restricted by your imbalanced AC unit. Run any amp you want in perfect comfort.

My listening room was furthest from the AC unit and couldn’t keep cool. Installed a mini split AC unit. Runs perfectly quiet.(no, really, it’s silent) I noticed that they use the same units in PS Audio listening rooms also. I Use it like a light swtich.

You can see the mini split unit on the right wall up near the ceiling over pauls head.

I have to agree that fixing the room’s A/C. Is the duct open all the way? Can you slightly restrict airflow around the house to increase it in your listening room. Most amps add so little heat relative to the overall temperature budget in the room... walls, floor, furniture... etc.

Thanks for the time & replies.

Encouraging news on the XA25\AHB2 direct comparison. Also great to get some alternative amplifier options to pull up and review.

The room AC isn't a drastic or large comfort issue. It's just noticeable to have the heat from the amp rising from the rack as the cool air comes in from the ceiling. 

I'm sure there's a small itch to try some new gear, and I'm still evaluating the purchase heavily. The Pass amp & pre are really delivering. It's nice to test & learn, and there always seems to be some lost time and cash involved when things don't meet expectations.