vintage 303 acid bassline 130bpm 4 bars

About this sample

This acid bassline features a single sawtooth oscillator per note, emulating the classic TB-303 sound. It runs at 130 BPM over 4 bars with a pattern in F# minor, including slides that glide pitch from previous notes. A 24dB/oct resonant low-pass filter with a fast-attack envelope creates the signature squelch, opening more on accented notes every fourth sixteenth note. Gentle tanh saturation simulates analog overdrive, while a high-pass filter removes sub rumble below 35 Hz. The sound is stereo but centered, with a fade-out at the end for a smooth finish.

Ideal for acid house, techno, or any dance genre around 130 BPM, this bassline delivers authentic vintage character. It works well layered under synths or drums but watch the resonance and filter cutoff in the mix to avoid harshness. Use EQ and compression subtly to keep it tight and present without overwhelming other elements.