The BS-203 is a monophonic analog-modeled acid synthesizer with three circuit modes that re-plumb the mixer and filter: Classic (303), Silver (202), and BB (Juteon Bassboy homage). A pattern-generating sequencer writes scale-locked lines (MODE / NOTES / LENGTH, GATE / DIV / ACCENT / SLIDE, KEY Maj / Min, RANDOMIZE) and GRAB MIDI drags keepers into the DAW. Onboard FX: SATCH saturation, tempo-synced delay, reverb. VST3, AU, AAX. Host DAW required.
Verified 31 August 2026: $25 one-time at Born Second. Five activations, unlimited updates, no dongle, no subscription. macOS 11 or later (Intel and Apple Silicon). Windows 10 or later. Free fully functional demo with periodic white noise. We have not scored it.
For the full breakdown, see the BS-203 first look.