Which Solid State amplifier would you recommend for my budget?

Should also look at Heed as they make some freaking awesome sounding Class A integrated for a very very reasonable price. Gene Ruben is a dealer in California. 

I have Heed Elixir that I just love in one of my systems. 

The Best Integrated Amplifiers | Buyers Guide 2022 - Part-Time Audiophile (parttimeaudiophile.com)

When I had 2 + 2s, I had both the interface (allows you use your own amps) and 4 of their servo-amps (semi moded); I highly recommend them. There's a guy in FL who does great upgrades for them

hth

I recommend one of the class D amps … Orchard audio or one with Purifi units inside. The Orchard Ultra has great sound for the $$.

I have Acoustat 2+2’s and Spectra 66’s. I am currently using a Mark Levinson ML-9 (which can be had pretty reasonably) and I’m extremely happy. I have a Rowland 5 I just purchased coming this week. I will see how it does compared to the ML9 and my Acoustat Trans Nova amps. 

I believe the Rega Elex R is all you need and can save a few dollars. These are lovely non harsh sounding amps.