Never,ever did I think I would like something better than this amp,but it happened a few weeks ago. Time to find this one a new home.This is an early TF 550,built on a 420 case,and has the old style "switch". It was upgraded back in 2009 with every upgrade available at the time. I bought it used in 2007,and it has worked flawlessly. No need to go into details about sound and such,most of you already know. I have no idea what it's worth as far as cash sale goes, if anyone knows,feel free to speak up,so I'm putting it up for trades until I come up with a realistic number. Amps,Basses,whatever. I'll have pics up tomorrow.