R3-D3

Cutoff 50
Reso 50
Env Mod 50
Decay 50
Accent 80
Note Gate Acc Slide
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Space Play/Stop  |  A-K Play notes
TB-303 Bass
E1 — Simple
Standard oscillator with biquad lowpass filter. Clean sound, minimal CPU usage.
E2 — Authentic
Diode ladder filter (~18dB/oct) with resonance self-oscillation. Accent boosts both VCA and filter modulation. The authentic acid squelch.