Looking for a SS integrated Amplifier recommendation going into a new system


While waiting for a new speaker delivery, I have some time to start looking for a SS integrated amplifier, and hoping for some recommendations.

The speaker to pair with is Ascend Acoustics Sierra Tower with RAAL tweeter option that is around 91dB efficient, and the room size is 12x18x8.  I mostly listen to classical, jazz, female vocal, and the listening level normally is around 85dB, occasionally go up to 90dB.

I originally was looking for class-A integrated amplifier, but now would like to open the possibility to class-A/B as well to see what will be a good match for this new system I am putting together.

TIA
elan120
Thank you all, again, for all the great inputs.

This is going to be an interesting journey in the next few months to see what works the best in my system.  So far, I am very high on the two class-A integrated amps recommended, the Pass Int 25 and Luxman  590AXII, mainly because I also plan to see how well they will drive my headphone that I listen to quite a bit.  Meanwhile, some other recommendations also got my attention, such as Hegel, Belles...etc., I will see what I can do to get some of these amps for a home audition.


On a separate note, how is Sugden integrated amp offering?  Is it worth to look into further?
The Boulder 866 gets stellar reviews.  Very neutral leaning slightly to the warm side. I have one on order to pair with Rockport Avior ii on order as well. A little above your price range new  so perhaps used. Good luck in your search! 
Hi
hard to select these days 
I just changed from 50 yrs of separates to
peachTree nova 150 and am v v v pleased.
no excessive heat since it’s class D!
not my first class D system!
the customer service is excellent as well!
the unit has great sound not bright and can listen for hours! Great sound stage
clean bass too
good luck
All this gear is great but room acoustics will make or break any system. I have owned 
Boulder
Belles
Dynaco
Mcintosh
Peachtree
Arcam

and I would suggest consider service too
my latest experience I was with Peachtree and service is excellent 
Any of the above combos will wott r k v well in a good room

currently I am using a Peachtree nova 150
and it’s excellent 

have fun