There are several GaN amps out there but from what I have seen, only one is a real performer with modern class d design- the Orchard product. Read the review in Audio Express I believe where it and the Purifi amp were compared. The LSA and Peachtree amps use the same GaN module which has a heavily dependent frequency response with load, just like the 25 year old Tripath class d amps. This is an out of date design- modern, state of the art class d amps like Purifi, ncore, and the Orchard modules have load invariant response, which is what a properly designed amplifier should have.
Purifi v Gan amps?
Has anyone had the opportunity to compare Purifi based amps eg MarchP422, Purifi etc with Gan amps such as LSA Voyager or Peachtree Gan 400 or similar?