Erica Synths Resonant Filterbank – Stereo Analog Filterbank & FX Instrument

The Erica Synths Resonant Filterbank is a desktop stereo analog filterbank that doubles as a sound-shaping instrument and live performance FX unit. Ten resonant bandpass filters spread across the audible spectrum let you boost, cut, compress and modulate any incoming signal – drum machines, modular gear, synths, guitars or even no-input feedback loops – available now at Soundium.

Key Features

• 10-band analog stereo filterbank: Hands-on boost / cut sliders across 29 Hz to 11 kHz with 17 dB/decade slopes
• 20 LFOs and envelope followers: Modulate any parameter for evolving textures, gates and rhythmic motion
• Snapshot morphing: 128 preset slots with seamless real-time morphing between configurations
• Spectral analyser & dynamic EQ: Visualise the signal and use the filterbank as a mastering-style multiband processor
• +24 dB analog gain stage: Drives guitars, line gear and modular signals into musical saturation
• Studio-ready connectivity: Balanced 6.3 mm stereo I/O, DIN MIDI in, footswitch input and USB for firmware and patches

Customer Benefits

The Resonant Filterbank gives producers, sound designers and live performers a single creative tool that bridges the filter, EQ, FX and instrument worlds. Use it to colour a mix, generate experimental tones with self-oscillating resonance, or animate a static sound with deep modulation – all with the tactile, hands-on feel that defines Erica Synths.

Quick Specs

• Type: Stereo analog 10-band resonant filterbank
• Frequencies: 29 Hz, 61 Hz, 115 Hz, 218 Hz, 411 Hz, 777 Hz, 1.5 kHz, 2.8 kHz, 5.2 kHz, 11 kHz
• Filter slope: 17 dB / decade
• Modulators: 20x independent LFOs and envelope followers
• Memory: 128 morphable preset slots
• Inputs: Balanced stereo 6.3 mm, footswitch, DIN MIDI in, USB
• Outputs: Balanced stereo 6.3 mm
• Gain stage: Up to +24 dB analog boost
• Power: 12 V DC external supply

What's in the Box

• Resonant Filterbank unit
• 12 V DC power supply
• Quick Start guide

Use Cases / Ideal For

Ideal for studio producers, modular musicians, sound designers and adventurous live performers seeking a stereo filter, dynamic EQ and FX instrument in a single deeply playable box.

Compatibility

Works with any line-level instrument or stereo source – modular synths, drum machines, grooveboxes, guitars and DAW outputs. MIDI in and USB enable external control, preset transfer and firmware updates.

Pros & Cons

✅ Pros:

• Authentic Erica Synths analog character
• Stereo signal path with deep modulation routing
• Doubles as filter, EQ, FX and standalone instrument
• Hands-on sliders make tweaking effortless

⚠️ Cons:

• Steeper learning curve than a simple filter pedal
• Single mono footswitch input (no expression pedal)

Drop the Resonant Filterbank between your mixer and your monitors, or right in the middle of a modular patch, and discover an instrument that responds like nothing else – pick yours up at Soundium and add a true centerpiece to your stereo signal chain.