From AI: The BAT VK‑120 (a Stereophile Class A component) is decisively superior to the EVO 400 in any system that demands current, control, and scale.
EVO 400 offer pleasant warmth, Softer bass, Compressed dynamics, shallower stage, a “nice” sound rather than a “commanding” one.
The EVO 300 is even less competitive with it’s lower‑current, lower‑headroom.
You can buy two VK-60s, convert them to mono upgrade the caps for even better performance and be under $4K (Which is less than the EVO 300). Add BAT preamp and you have a grand slam.
. . .and, yes, pick a speaker first. My amps comfortably drive my Martin Logan CLS Is--with it’s wicked load that can drop to 1.6Ω at 20 kHz
Regarding your preamp selection, why listen to Schitt if you don’t have to?
Just my thought.

