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
A lot of great choice and recommendations.
I Second the Simaudio 600i recommendation and you should also look at  Belles Aria Integrated Amplifier from Power Modules. https://powermodules.com/aria-integrated-1

Well, if you’re in the market for a true end-game piece and open to used, here’s a Vitus integrated that retailed for $27k available for $11k that’ll nail all your hot buttons and you’re set even if you upgrade your speakers significantly in the future...

https://www.usaudiomart.com/details/649766445-vitus-sia-025-mki-integrated-amp/
Thank you all for the recommendations.  I am going to take time review some of the items.

Regarding the tube amp possibility, I have my share of tube amps before, but limited to just flea power category where the maximum power output I have is 8W (300B), and some even lower at 1.5 to 2W (45).  I might revisit the possibility of trying higher power tube amps, but for now, I prefer staying with SS.

Meanwhile, appreciate the inputs on other features I might need.  They look to be very useful and have more flexibility for future setup.

Good to know  Luxman 590AXII gets so many positive votes.  That is one of the choice very high on my list.

IHave owned Pas Labs ,Luxman, and the Coda  CSIB integrated 
amp has many class leading parts in their build in the $10 k
or under range the others do not ,like a potted 3 kva transformer 
120 amp on demand.and 3 power choices.
OP- I have the 590AXII, Nothing against Pass or Hegel as I was able to listen to them also,  just liked the features and sound a bit more and the phono pre (MC for me) in it is fantastic. FYI, Luxman rates it 30 watts pure class A, some reviews have measured it as high as 90. Regardless, I traded in a well-regarded 200 watt Class D and do not miss it at all. Best of luck in whatever you choose.