Roland TB-303

Roland TB-303 Bass Line
TB-303 front panel
Manufacturer	Roland
Dates	1981–1984
Price	UK £238 (£1152 in 2023), US $395 ($1324 in 2023)
Technical specifications
Polyphony	monophonic
Timbrality	monotimbral
Oscillator	Sawtooth and square wave
LFO	none
Synthesis type	Analog subtractive
Filter	24 dB/oct low-pass resonant filter, non-self-oscillating
Aftertouch expression	No
Velocity expression	No
Storage memory	64 patterns, 7 songs, 1 track
Effects	No internal effects.
Input/output
Keyboard	16 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.