I liked this amp so much a couple weeks later I bought one of the 2203's that were built in George's shop some 5 years ago. Great amp as well.
So anyway after having more fun with the 12,000 than anything in recent memory I found a used 2012 George built metropoulos 50 watt plexi (serial 5008). Awesome as well and different enough to have both. The 100 watt is a little more special but perhaps that is the sheer girth of the tone or has more hrs on it, who knows. I've got other amps as well which are good but honestly the only amps I have any desire to use are George's, just unreal sounding amps! Thanks George and I'm sorry I did not buy them direct new as I would love to put the money in your pocket but when you see these pop up used it's hard not to pull the trigger

Both are completely stock except the bright cap on the 50 watt looks to be changed to a silver mica 100 pf. So I'm wondering what value George uses on these, can't remember what the 100 has and not sure if both amps use the same value? If you see this George or anyone else that may know that would be great!
Here is a quick clip I made the same day I picked up the 12,000. Attenuated with the Alex before I got the fryette PS. Plugging in instantly makes you want to play ACDC riffs even if you don't know how to play them properly lol. There is a 10 second pause in there where I switch from a 1980 Tokai LS80 les paul replica loaded with wiz pickups to Navigator les paul replica with BK Rebel Yell humbuckers.
https://www.youtube.com/watch?v=tzo3qFnX3Zk
Steve