I was wrong. I have Model One, Two, Four, Five, Six, and Seven. No Three.
They're all solid-state, though. I've not heard one (except for the Four I reviewed here: https://www.gad.net/Blog/2019/03/19/guild-model-4-amp/) and my take is that they probably all sound like solid state amps from when solid state amps didn't sound all that great. That's a blatant preconceived notion, however. The Model Three could be the best thing since the Fender Deluxe for all I know.
I've seen Kurt's. They are pretty meh. Read GAD's review with a couple of adult beverages. On secound thought, have them before you read his review. ;-)