I've got a TFB-550 w/switch. $900.00 plus shipping. I bought it from TB'r Joey the Squid. It's one of the first conversions and is built into the original TFB420 chassis verified by Dave Funk himself. I don't have the original box, didn't get it with my transaction. It's in new condition. I just want to try some different units, plus I already have a Walter Woods Ultra for light weight setup which I prefer. Will trade ThunderFunk for Accugroove Cabs only. I'm most interested in the Tri-210L will consider Tri-112L and cash.