Offered is a very nice all working Vintage Gibson Amp.All original with foot switch.Sounds great.Tolex is in excellent shape.Only mod I have seen on it is a three prong grounded power plug.Just the facts. The amp features four 6EU7 dual-triode preamp tubes. Three of them are shared between the channels and the fourth is involved in reverb send and recovery. The 6EU7 was designed to be a high-quality, low-noise replacement for the 12AX7 with an added humbucking capability, The amp has one 6CG7/6FQ7 driver that is used as the phase inverter. It has one OA2 voltage regulator, a dual-6L6GC push-pull power section that I think in this application provides 35 watts, a 12AU7 for effects send and recovery, a long-tank spring reverb with transformer feed, and an opto-isolator tremolo. The two channels are voiced slightly differently, with two inputs offered for each channel. This amp was built in the 1960s so there’s no headphone out, effects loop, or master volume. It’s straightforward, dumber than dirt, strictly “plug ‘n play.”The whiteface Gibsons have some unique and/or strange features. For instance, the Ranger and Saturn share an interesting four-position rotary power switch that also inverts the ground polarity of the two-prong cord. Clockwise from left the switch positions are OFF, STANDBY, ON, and ON (with line polarity inverted). It also features two pilot lights. The lower, amber lamp lights up when the amp is switched onto standby. When you select either of the "ON" positions the amp switches to the upper, red light. The amp features both a power section filter choke and a reverb send transformer. Things come in twos on this amp: pilots lights, inputs,outputs.This amp is heavy so freight is substantial.Email for exact freight quote.Questions and Comments welcome.Thanks for looking Good luck