Purifi v Gan amps?

There is not one sound of anything.  Purifi does not have one sound.  Ganfets do not have one sound.  Read 10 audio's reviews of my modded VTV Purifi amp and his review of the NAD amp using the same Purifi modules.....completely different sound....btw I am no longer modding amps.....so no money in the game.  Same with Ganfet amps.....just like what yysantabarbara heard......you do a mod to an amp and you have a different sound.  Every Ganfet amp sounds different from every other GanFet amp.....and if you mod any one of them they will have a different sound.  Just change the AC inlet on an amp.....and it sounds different.....just change the input wires, or the output wires, or the output jacks, or parts in the circuit, or the output inductor, or a million other things.  This game is infinite.  Just like life.  So, you have to listen to the different amps and compare.  VTV sells Purifi based amps using a front end board that lets you roll various op amp buffers......you get a different sound with each different op amp.  Most of the things that make a sonic difference and improvment cannot be measured by normal measurements......This fact, of course, drives the objectivists crazy.

What a wicked crazy game we play...he he.......Enjoy the dance......the only dance there is......We are so beautiful....amazing, is what we are.

They are both unproven technology.

Why would you choose something like that when there is plenty of choice of amplifiers using time proven design and components?

The latest and greatest is very often not the greatest.I know people who have been using  and building Class D amps for at  least a decade and they do not like the  sound of the Purifi modules.

compare Purifi based amps eg MarchP422, Purifi etc with Gan amps

Probably nothing, or everything. Audiophiles talk about synergy. This is where measurements help, rather than handwaving and guessing.

Ralph’s class D amps (Gan) have input of 100K ohms - this is good. They are only suitable for 60hz/120 V supplies. This makes them unsuitable for about 6 billion people.

The March amps (Purifi) have an input of just 20K ohms. This makes them unsuitable for many pre-amps which may have output impedances which may be nominally suitable at about 100 ohms or so, but at different frequencies they may be several thousand, so March is also unsuitable.

Its a waiting game for the designers to get their priorities in order.

In the middle are AGD (Gan) amps with a nominal impedance of 40K ohms, and with international electricity capability.

Ticks all my boxes, which I am a little bit sad about for reasons.

It’s pretty clear both technologies offer some high performance potential.  To me, I wouldn’t worry so much about the technology and just focus on whatever amp offers the sound characteristics you’re looking for.