Retromulator

Retromulator is a hardware emulation plugin that brings legendary gear back to life through cycle-accurate low-level emulation.

Cores:

• Wurlitzer 200A — physical model piano via OpenWurli, modeling the tine, pickup, and tone bars of the classic electric piano with per-voice physics and a live settings panel with parameter editing.
• Yamaha OPL3 — FM synthesis via Nuked OPL3 v1.8 cycle-accurate emulation by Nuke.YKT, with SBI instrument loading, folder-based bank browsing, and zip import support.
• Access Virus ABC and TI emulation with sysex patch loading, ROM preset extraction to bank combo, sysex cross-detection on patch import — loads ABC patches into TI and vice versa, and Virus preset converter for CB/A downgrade.
• Nord Lead 2X (N2X) emulation with per-program sysex navigation, edit buffer patch support, output level correction by summing DSP A and DSP B voices at full scale, and sysex patch name support expanded from 10 to 20 bytes with backward compatibility.
• Roland JP-8000 (JE-8086) emulation with ROM preset extraction, patch browsing, .pfm performance bank loading, multi-performance bank loading, and AU MIDI latency fix running at 44100 Hz.
• Waldorf MicroQ and XT emulation via cycle-accurate DSP engine with folder-per-bank ROM loading. Waldorf XT bank SingleDump redirected to edit buffer for immediate playback.
• Yamaha DX7 emulation via VDX7 — full hardware-level emulation of the Hitachi HD6303R sub-CPU, Yamaha YM21280 EGS (Envelope Generator), and YM21290 OPS (Operator) chip set with 16 KB firmware ROM and 32 KB factory voice data.
• Akai S1000 sampler — SF2, SFZ, ZBP, and ZBB sample bank playback via the SFZero v3.0.0 MIT-licensed engine with 8-point sinc interpolation, extended SFZ/SF2 opcode support, discoDSP Bliss sampler format (.zbp/.zbb), MIDI CC support (mod wheel vibrato, volume, expression, pan), sustain pedal, pitch bend, browse folder mode with auto-slice drum mapping and state persistence, and ISO/BIN/CUE disk image loading. CC20 global tuning support with auto-slice and tuning state recall.
• Commodore 64 SID 6581/8580 — based on reSID. 3-voice polyphony, 8580 chip model with high-quality RESAMPLE, GoatTracker .sng / .ins bank loading (GTS3/4/5, GTI3/4/5), full macro playback engine (wavetable, pulsetable, filtertable, speedtable) and live MIDI control of cutoff (CC 74), resonance (CC 71), pulse width (CC 75), vibrato (CC 1) and pitch bend.
• Synth core listing sorted alphabetically with engine author credits in synth selector.

Firmware & ROM Management:

• Browse dialog accepts .bin, .mid, and .zip files; ZIP archives are extracted flat to the ROM folder with automatic multi-synth detection — all recognised firmware files are saved in one pass.
• Assembled ROM binaries are written to the ROM folder and source MIDI/IC dumps deleted, so subsequent launches load instantly from a single .bin.
• Firmware-missing browse flow on synth type change with synth-specific instructions.
• Per-synth patch name extraction and bank/program combo selectors.
• SysEx preset and bank export with embedded patch names.
• Import/Export/Delete and drag & drop support for all cores.
• Per-synth remembered file chooser directory persisted across sessions.

Plugin & Standalone:

• AAX, AU, VST3, and Standalone plugin formats with DAW state persistence.
• Resizable editor window with aspect ratio enforcement and in-editor corner resizer for AU host resize support.
• GUI window size persisted in settings.xml across all instances and DAW sessions.
• DAW notified of state changes on preset and synth updates.
• Shift+< > navigation to jump between bank folders.
• Hardened runtime with JIT entitlement for macOS code signing.
• DSP thread stack increased to 64 MB for stability.
• Standalone last used MIDI device remembered across sessions.

{See video at top of page}
https://www.youtube.com/watch?v=dYndUS3H4qk