Roland TB-303

Roland TB-303 Bass Line
TB-303 front panel
ManufacturerRoland
Dates1981–1984
PriceUK £238 (£1152 in 2023), US $395 ($1324 in 2023)
Technical specifications
Polyphonymonophonic
Timbralitymonotimbral
OscillatorSawtooth and square wave
LFOnone
Synthesis typeAnalog subtractive
Filter24 dB/oct low-pass resonant filter, non-self-oscillating
Aftertouch expressionNo
Velocity expressionNo
Storage memory64 patterns, 7 songs, 1 track
EffectsNo internal effects.
Input/output
Keyboard16 pattern keys

The Roland TB-303 Bass Line (also known as the 303) is a bass synthesizer released by Roland Corporation in 1981. Designed to simulate bass guitars, it was a commercial failure and was discontinued in 1984. However, cheap second-hand units were adopted by electronic musicians, and its "squelching" or "chirping" sound became a foundation of electronic dance music genres such as acid house, Chicago house and techno. It has inspired numerous clones.