Hey folks- I'm new to the forum, but have a Q/discussion topic for ya'll. I bought a Guytron GT-100 F/V last year off eBay (Serial #068) and after talking with the folks at Guytron, it turns out it's a pretty unique animal. The serial number didn't match up with the new model. Evidently, Guy converted a very small handful of the older GT-100s to the new F/V specs (and I mean very small handful). The only real cosmetic tip-off, besides the serial number being wrong, is that my amp: 1) doesn't have the dual FX loops (older GT-100) and 2) doesn't have an FX loop with a pushbutton to select between -3 and +10 dB operation (like the GT-100 F/V) It's just a plain Jane FX loop with no levels, pushbuttons or anything else. And I still don't know if it's hardwired for -3 or +10. Kraig (or was it Mick?) at Guytron suggested I throw this out there to see if there are any others with similar amps. Sounds like the records on these converted GT-100s are, uh....a little spotty. Anyway, I'd love a little history and have many questions in this realm, one being "Are these tonally identical to the new F/Vs?" Best- J.B.