These are great amps - I'm selling my TFB-420 because I've upgraded to a TFB-550B. This particular sample is #119, which would put it among the first run of this model, but I believe it enjoyed a later visit for upgrades by Mr. Funk as it sports a switchable fan and speaker outputs include two quarter-inch jacks and a Speakon. Puchased from another TB'er about 16 months ago. My use has generally been limited to single 8-ohm cabinet use in jazz-like situations, or for home practice. There are a few scratches on the top and no handle, and a little scratchiness on one of the eq pots, but the bottom feet are present and the front is most presentable. And if you're like most TF users, you'll likely not be using the EQ because the timbre and enhance controls are so effective. $650, shipped within the Continental U.S., takes it.