Gibson 1968 "it goes where you go" pamphlet. Page 5 continues with some of the more powerful amplifier models available from Gibson at the time, all available with Tremolo and Reverb. Illustration of the Duo-Medalist, Super Medalist, Medalist 4/10 and GTR 600 amps.
The Duo Medalist had a single 12" Jensen Speaker, eight tubes, and 25w of power - with a 1968 price of $295.
The Super Medalist had a two 12" Jensen Speakers, eight tubes - with a 1968 price of $395.
The 60w Medalist 410 had a four 10" Speakers and nine tubes - $495.
The GTR-600 was a 360w solid state model, equipped with two 12" cones and a treble horn. This amp had two channels, with guitar, flat and organ inputs for each - 1968 list price $695. This short-lived model was only ever listed in the '68 Gibson price list.