Michael Borresen is one sharp guy and it still amazes that he can design world-class speakers, and then go into amplifiers and other items as well. Prior Aavik pieces seem well-regarded (despite the prices of all Borresen designed items). And then there is the obscene pricing for sn... oil products...
I have DSP room correction and minor DSP equalization and my good old McCormack DNA-1 as musical as it is, cannot hold a candle to my Class D W4S STI-1000.
The W4S Class D integrated is silent at the speakers and runs 500w/1000w which is plenty for the old Raidho D2s. I get pure liquid detail and an iron grip on bass. I've never had a super expensive Cl A or AB to compare, but I am very happy now.