Fender advertisement (1979).
Fender Studio Bass amplifier

Fender advertisement (1979).

What Do You Call The One Amp That Opens Both Doors To The Stars
1979

Yesterday, you needed two bass amps to launch your music: a high-powered stage amp and a sensitive studio amp. But changing amps meant changing sound.
So Fender designed the all-new, all-tube Studio Bass Amplifier The studio amp and stage amp in one amp. Which gives you 200 watts RMS And a lot more.
Five-band equalization and tone controls so you can boost and cut frequencies to create the sound you need.
Foot controlled EQ. Volume, tone and output controls that let you play from clean and powerful to deep and dirty.
A standby switch that eliminates warmups by keeping tube filaments hot.
So whether your aim is recording or performing. See your authorized Fender dealer now And get your acts together with the new Studio Bass Amplifier.
It's gonna open a lot of doors for you