Retromulator – a free hardware synthesizer emulation plugin – has been updated to version 1.2.
Retromulator 1.2 features two new hardware cores: the Wurlitzer 200A physical model piano and Yamaha OPL3 FM synthesis, along with expanded Akai S1000 browsing and import capabilities.
Here’s what’s new:
New Hardware Cores:
- Wurlitzer 200A: Physical model piano via OpenWurli, ported from ~3,000 lines of Rust to C++ and integrated directly into the JUCE plugin framework. Models the tine, pickup, and tone bars of the classic electric piano with per-voice physics.
- 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.
Other Improvements:
- OpenWurli settings panel with live parameter editing via combo and navigation pill.
- Akai S1000 browse folder mode with auto-slice drum mapping and state persistence.
- Akai S1000 ISO/BIN/CUE disk image loading.
- CC20 global tuning support with auto-slice and tuning state recall.
- Import/Export/Delete and drag & drop support for all cores.
- Engine author credits in synth selector.
- Bug fixes.
Availability:
Retromulator is available as a free download for Windows, macOS (including Apple Silicon), and Linux in AAX, AU, VST3, and standalone formats.

thanks for sharing. discovered openwurli thru this post which is indeed very nice
adding a physical model Wurlitzer 200A plus Yamaha OPL3 emulation is a great combo for creative sound design! Do you think these new cores bring Retromulator closer to actual hardware feel?
1.3 ROM + Factory + Bank collection https://archive.org/details/retromulator-backup-20260328