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

Another tube suggestion, Mike Sanders' Quicksilver Integrated Amplifier. It is rated at 20W and drives Focal Aria 906s, rated 89.5 dB, just fine. The Quicksilver replaced a Yamaha A-S501. My music sources and room source are close to yours.

@Op,
I had the exact same Sierra towers with raal and ran them first with a marantz pm-15s2 and later on with a parasound halo a23. I thought I loved the sound of both until I got a pair of PBN speakers which opened my ears to the fact that the raal tweeters were just to thin in their presentation even so they gave a great sense of space. Mainly they did not sound strong enough to fill the room with a solid realistic sound. After experiencing the solid live like sound of the PBN Montana XPS, I could not ever go back to the light beautifully airy sound of the Sierra towers. However they were a great step up in my audiophile journey. If I could do it over I would pair them with a leaning dark sounding amp for sure.

Have a look at AVM from Germany. I just got their SA8.2 power amp, which I am currently driving direct from my PS Audio DS Dac. Sounds absolutely amazing. Warm, luscious, detailed but not fatiguing. I am using them to drive focal sopra 3s. Was previously using the Anthem STR integrated but the AVM is in another league. 

I recently put together a system using Pass INT 60 and really love it. It has 30 w/ch pure class A and another 30 class A/B. More than enough power to drive my Volti Razz speakers. New the INT 60 is 9,000 but used ones can be found on the used market. I paid 6,500 for a 6 yo unit and it is flawless.

I have the Ascend Acoustics Sierra Towers w/RAAL and I run 2 different amps.
SS - Peachtree GaN400 ampTube - Raven Blackhawk Mk. 3.1
Both amps sound good with those speakers.