my favorite solid state amp is the darTZeel NHB-458 mono blocks, followed by the darTZeel NHB-108 stereo amplifier.
I'm a guy who loves tube amplifiers. and the darTZeel does have a touch of the breath of life of tube amps, combined with a very, very low noise floor and extended and uniquely natural and smooth top end and wonderful micro-dynamic energy.
the darTZeel amps use a minimalist parts count in the signal path and are swiss built like a tank. amazing jewel like quality.
I owned the dart 108's from 2005-2012, I've now owned the dart 458 mono's since 2012.