i am a big hegel fan, own/have owned many many of their units, up and down the line
one of my favorite ss amps of all time is the h20
hegel has an ultra clean low distortion sound, dead silent ink black background... there is zero introduced sibilance, grain or artificial high frequency emphasis typical of solid state modes of distortion that is the too-frequent achilles heel of so many solid state pretender high end amps ... as a result, the sound is very natural, very pure, very linear and the imaging, tone/timbre, instrument separation is absolutely wonderful
due to lack of artificial treble emphasis and superior damping factor, hegel’s midrange has a rich slightly warm texture and bass is deep, with slam, utterly well controlled - so in my view, the overall sound (and ability to drive tough loads) is in the same class as uber high end ss - such as ayre, pass, gryphon, boulder, coda, the best of classe, levinson, luxman...... yet at a notably lower price
something has to give, and that is that the gear is assembled in china, the styling is simply scandinavian plain/elegant and there is no bling... but what you get is truly top flight performance/sound and power at a significantly lower tier price
some will shy away due to sonic or aesthetic preferences, or perceived quality or other reasons, but this is my personal take on what hegel is/does, coming from having much experience with this and other brands
(no affiliation to hegel other than being a happy customer many times over)