I own a fabulous sounding Fender Twin Reverb guitar amp. It still has the faded block lettered "Jefferson Airplane" stamp on the back. Can anyone tell me which member would have used this amp? I have owned it for many years now, but always been curious as to its obvious history, if anyone out there knows......I have looked though some old photos and videos of the group and think I can see this amp. I do have photos if any one is interested.