Erica Synths has released firmware v1.2 for the Desktop Resonant Filterbank, a maintenance update bringing numerous fixes and stability improvements to the analog stereo filterbank. The Resonant Filterbank is a performance-ready FX unit with ten bandpass filters (29 Hz to 11 kHz), hands-on boost/cut control, configurable resonance feedback loops, multimode filter mode, spectral analyzer mode, dynamic spectral compressor mode, 20 independent LFOs, 20 independent envelope followers, 128 user snapshots, and balanced 6.3 mm stereo I/O.
Version 1.2 fixes: LFO MIDI/SYNC now follows the clock smoothly with no phase jumps at sync points (MIDI START snaps to the beat); INIT now truly clears LFO/ENV (Filter LFO/ENV no longer adds a +1 offset); faster LFO waveforms; separate slider map per mode (FB/FLT/CLK/DYN) in MACRO mode with fixed freezes, hard faults, and garbage text; slider button keeps its mapping and type change keeps destination; PLAY mode pool edit shows correct order numbers, no more freeze on unselect, maximum 20 snapshots, MIDI Program Change selects a snapshot in the playing pool, and morph is now visible on screen; CLK/DYN mode encoder no longer sticks at maximum, DYN SHIFT+encoder source selection now works; plus a bundle of other minor fixes.
The update procedure: power off the Resonant Filterbank, connect via USB to computer, power on while holding DATA ENCODER — the device appears as an external drive. Drag the .uf2 firmware file into the folder; update starts automatically. Version can be verified in CONFIG under SYSTEM menu. The firmware file is available for download from the Erica Synths support page.
The Desktop Resonant Filterbank (€660, VAT not included, estimated shipping December 15, 2026) also features discrete and morphing snapshot changes, configurable footswitch input, DIN 5 MIDI I/O, MIDI clock synchronization, and measures 25.8 × 17.6 × 7 cm (including knobs) at 1.1 kg.
Source: Erica Synths, October 22, 2026
Free firmware update for Desktop Resonant Filterbank owners. Download .uf2 from Erica Synths support page.