Bel Canto monoblocks are regular available at your budget and well under used right here and ebay.
Very quiet black background, plenty of punch and made here in the usa
https://www.audiogon.com/listings/lis8i8df-bel-canto-design-ref-1000-silver-solid-state
Just as one example
Or they also have plenty of stereo offerings if want to stay just in one chassis
Also a lot of their older units like the 500m can be had much much less cash and still very respectable amps with great customer service which counts for a lot too
Very quiet black background, plenty of punch and made here in the usa
https://www.audiogon.com/listings/lis8i8df-bel-canto-design-ref-1000-silver-solid-state
Just as one example
Or they also have plenty of stereo offerings if want to stay just in one chassis
Also a lot of their older units like the 500m can be had much much less cash and still very respectable amps with great customer service which counts for a lot too