I recently bought a Parasound A21+
Its very good. I would describe it as a neutral power amp as far as mid range goes with plenty of inner detail and depth.
I am preferring it over some of the Pass Labs amps which have a warmth to the highs that are not necessarily accurate.
The Pass range has moved to a more mellow, lush presentation in recent years. Its a bit too obvious on an accurate monitor.
The Parasound scores favourably on bass lines. There is more definition.
The power is effortless with 160 watts a side on tap.
These John Curl designs keep getting better and better.