Stuck point!

change to tubes, adds heat

add fan adds noise

in-room fans push heat, they don’t remove it, unless they ’exhaust’.

my small office: tube amp: can you add a small very quiet exhaust fan in the ceiling? Not any fan, I paid extra for a fan so quiet I forget it is on. It is in the far corner from me, and gently removes the hot air near the ceiling, dumps it into the attic, has a little self opening/closing damper. If outside wall it could dump outside, consider insulation in that case.

You grab the power from your room’s existing light switch, add a fan switch just above, pull wire up to above, small load, just add to existing circuit. No holes were needed in the wall. Note: some fan switches have lights when on, I should have done that.

Or, grab the power from attic light, down to wall switch, back up to fan.

check the boxes, ceiling or wall, quiet, get clues, then do some more research, don’t over-do the cfms, just enough for your space, keep ’sones’ low.

https://www.lowes.com/pl/Bathroom-fan-Quiet-under-1-5-sones--Bathroom-fans-heaters-Bathroom-exhaust-...

you can dump the heat into an adjacent room normally unoccupied, and normally quiet, i.e. garage, unoccupied office cause you aren't in it .... you don't want noise getting into the listening space thru the fan.

Pushing  87db speakers with a 23 watt Chinese single ended amp is a recipe for disaster. If you want good bass and the power to push inefficient speakers you should look at VTA (Bob Latino's) St 120. Its not an integrated like the Wlisenton. But IF you were running mono blocks you probably have a preamp. This will be a much better route than you are headed IMO. Plus you will have good service available too
As to bass, I've had the ST 70 and now the custom version of the 120 and have plenty of bass from both.

@sebrof, what would a recommendation be in Class D-A or A/B in around the $3,000 mark?

I don’t, I moved my tube amps into a bigger room :)

I actually ordered two of the Class D Mini GaN amps that twoleftears mentioned in the post directly above yours, but only out of curiosity, not because of heat issues (there’s a thread about how great they are and I couldn’t help myeslf)

@mrdon 

Lots to think about here. 
I’ve owned many tube amps over the years and currently own the Willsenton R8 running KT88’s. 
The Willsenton is a great amp for the money and runs in A/B so doesn’t run terribly hot. I’ve had a lot of class A tube amps over the years which, to me, sound better than AB. But they generally run hotter than the hinges of Hell and run through output tubes pretty fast. 
I’ve also found that a good Class D amp will do a better job on the bass: they usually keep an iron grip on woofers. 
That’s why I always use active woofers. 
Try as I might I haven’t found a SS or Class D amp that has the magic of tubes in the midrange and highs. 
As others have said, you’ll have to try it to find which right for you.

Good listening. 

If you are looking for an amp for musicality look for a used BEL class A SS amp.  Just heard one that a friend picked up for $450.  What a beautiful sounding amp.  Bested the Coda, and the Hegel, and a few others for overall just pure musical sounding and engaging.

Happy Listening.