Questions re:  GaNfet technology vs other designs.

I can't speak for the other makes but my Technics SU-G700M2 sounds wonderful most of the time. Sounds even better going directly in via Coax vs the line outs as it's a completely digital design (not just the power section). That really surprised me as it wasn't that way when I first got it. Guess it had to break in some. 

It doesn't sound like anything else I've had and it's the most balanced sounding as well. Nothing sticks out at the expense of anything else. Incredible see-through ability, revealing but not distracting. Incredibly harmonious.

All the best,
Nonoise

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@hgeifman 
Why not audition one in your system to see if you they float your boat or better than your current amplifier or Integrated. I have heard AGD Vivace Mono’s and they sounded nothing like conventional class d amplifiers. Amazing transparency, detail and gut wrenching bass.

For me, class A with high efficiency speakers is the ticket to audio nirvana :-)

This is a very difficult question to answer. You are comparing brands (Hypex, Purifi) with a technology (GaNfet).  A technology has no sound per se. Each implementation has to stand on its own merit. Orchard Audio may sound very different than Atma-sphere. Hope that helps.