video still
Ampeg SVT
Ampeg
The Ampeg SVT is a 1969 bass amplifier head designed by Bill Hughes and Roger Cox. It uses 14 vacuum tubes to deliver 300 watts of RMS power. Early units used unstable 6146B output tubes, later replaced with 6550s. It is a stand-alone head, not a combo. The Rolling Stones used five prototypes on tour in 1969, playing all guitars and basses through them.