Received the Mad professor courtesy of Mikey G have had it for 3 days now and have compared it to about 17 of my 35 high end amps. So far all I can say is AMAZING. This amp is has matched every tone from every amp I have compared it against so far. On top of that it is the quitest amp at idle I have ever had the pleasure of owning or playing. Here is what it has been compared to so far. Divided by 13 FTR 37 Soldano SLO 1BMF Bogner SuperShiva Bogner Caveman (this amp still has something not quite attainable by the professor but it was close) Bogner Fish Budda Superdrive Fender Custom Tonemaster (modded) Bogner XTC classic Bogner XTC 100B (again this amp has something the MP doesnt but its close) Fender custom vibrolux Komet 60 CAE OD 100 (a little more head room than the MP but the MP is only 40 watts) Matchless Superchief The list goes on. Basically this amp is like a swiss army knife of amps just about every tone you can think of is in there and it does it as good or better than said tone. Anyway, this amp is truly the ultimate recording amp. Will have more resluts in a couple more days.