From
https://www.hegel.com/products/power/h20
"A practical benefit of the H20 FET-technology is a more rhythmic sound. It is simply better at re-creating a bass line. Another vital element is the removal of harmonic echoes in the higher frequencies, which result in a lot more detail and still a smoother and more natural sound."
Umm....
Notice also the incomplete spec (a common thing with consumer audio gear)
Distortion is quoted at a power level, but not at what frequency; or is it less than the figure at all audio frequencies? Who can say.
Intermodulation - what power level was it measured at?
Damping factor of 1000 (no frequency spec; it always falls with frequency as a result of the Zobel inductor). "Amongst the highest damping factor in the industry, and full control of the loudspeakers. All this to give you the most natural, rhythmic and dynamic sound on the market today.". Totally irrelevant spec. The damping factor is determined by the loudspeaker drive unit impedance.
It costs £4k for this, by the way. At least it looks good.
Craig