Had a bit of fun with the AM4!
AM4 -> Fryette PS-100 -> Bluetone diagonal 2x12 w/ V30s
vs Mesa Mark V 90 -> PS-100 -> 2x12
vs BluGuitar Amp 1 Mercury Edition -> PS-100 -> 2x12 or 4x10 w/ 10" Greenback
I could dial the AM4 to sound very similar to the Mark V ch3 MKIV mode. The GEQ works different from the real Mesas so it's a bit of guesswork for settings.
With the Mesa going direct into the cab, it does feel a bit different from the AM4 -> Fryette. Both through the Fryette is a closer match.
The BluGuitar held up easily with e.g JVM OD1 Orange and other Marshall style models. It really is the easiest thing for me to dial a good sound.
My absolute favorite Fractal model is still the Cornford MK50! That sounded like an absolute beast through the Fryette and 2x12! If the Mark V ch3 and JVM OD1 Orange are like a chainsaw that cuts through, the Cornford is like a steamroller that you hear rumbling down the block. It's a such a fun model! I wish I could get the real amp for reasonable money.
Overall I find the AM4 a really fun unit to work with, except that it's a bit annoying to jump between scenes and effects modes if you want to turn on/off some block. I need to get it setup for proper MIDI control to make this easier.
PS. Fractal, come on...can't you sort the speaker impedance curves alphabetically? In what world does 2x12, 2x12, 4x10, 4x10, 2x12, 2x12 make sense as an order of settings? In any case, finally found the 2x12 Recto setting which I guessed would be fairly close to my 2x12.