Used Levinson 532H or Krell FPB 400CX

Krell👍

I think either of those amps could make you happy at a reasonable cost, but I would not say they sound the same and it really comes down to your system and listening priorities. The Krell is a big-assed class A amp so expect large current draw and heat output. The 532h is a more conventional class AB design you could likely leave turned on all the time. My personal pick would be the Krell.

It will depend on the matching speakers.

Krell had worked wonder for Apogee Duetta Signature.

But after switching to Avalon Ascent II, I had found the sound of Krell too bright.

Mark Levinson sound gentler than Krell.

Thomas