The solid state amplifier section starts with a new model first included in Gibson price lists in June 1965. Although Gibson had produced solid state amplifiers before (see the short-lived Gibson Starfire in the 1964 Crestline amp catalog), the Gibson GSS-100 was taken a whole lot more seriously. This amp (along with its 50w combo GSS-50 sibling) arrived at a time when solid state was seen as the future of guitar amplification. The GSS-100 consisted a two channel (guitar and bass), four input head, with two speaker cabinets, each holding 2x10" speakers. Four more power, this amp could be combined with extra Plus 50 powered extension cabinets as described on page 19.
The new Gibson solid state super power all-transistor amplifier series lets your audience hear every note, everywhere. Every exciting tone – clearly, distinctly, radiantly.
The GSS-100, with its full power of 100 watts (more than 200 watts peak power), its three-unit sealed-case, cushion-of-air construction principle, and remarkable versatility, projects throughout any room or auditorium, regardless of size, shape or acoustics. The GSS-100 as the authority to engulf a vast outdoor audience, yet precision control for subtle, sophisticated jazz sound in an intimate room.
The GSS-100 was a very expensive amplifier, with a US 1966 zone 1 list price of $525. That's more expensive than an ES-345TD ($450), SG Custom ($455), ES-175D ($390) or Firebird VII ($379.50)! Serious money in 1966.
$300