Erica Synths Black Stereo Reverb

Hi-fi stereo DSP reverb built on Tape and BBD delay lines, with freeze, stereo spin, and 10 savable presets

12 HP Eurorack module

The Black Stereo Reverb is a hi-fi stereo effects module built on Erica Synths' custom DSP engine, with algorithms developed in collaboration with Dutch effects company 112dB. The reverb is built on selectable Tape, BBD, or Dirty BBD delay lines (Type switch), each with Room, Hall, and Cathedral modes (Mode switch) that set different early/late delay mixes. The Size knob scales the space from small rooms to megastructures, Feedback goes all the way to self-oscillation, and Tone/Spn shapes the tone of the reflections — or, with Shift held, spins them across the stereo field. Freeze captures the reflected audio as a loop, either from the panel button or a gate at the Freeze jack, and while frozen the Size knob and 1V/oct-calibrated Size CV input set the loop's playback frequency. Ten preset patches can be saved and recalled from the panel or switched by CV at the Patch jack. The dry/wet circuit is fully analog.

Features

• Reverb based on Tape, BBD, and Dirty BBD delay lines
• Room, Hall, and Cathedral modes for each delay line type
• Manual and gate-triggered freeze with 1V/oct tracking of the frozen loop
• 10 savable preset patches, switchable by CV at the Patch jack
• CV inputs for size, tone, feedback, and preset selection
• Adjustable stereo spin of the reflections
• Fully analog dry/wet circuit
• 10-LED display shows stereo signal levels and preset slots
• Audio bootloader for firmware updates

Controls & Jacks (18)

• Size
• Type
• Mode
• Tone/Spn
• Feedback
• Freeze/Save
• Size CV
• Dry/Wet
• L (Mono) In
• Shift
• Patch
• Freeze
• L Out
• R In
• Size CV In
• Tone CV In
• FBK CV In
• R Out

How-To Guides

• Melodic Freeze
• Self-Oscillating Drone
• Save and Recall Presets
• Rhythmic Triggered Freeze
• Spinning Cathedral Wash

Explore the interactive Black Stereo Reverb panel on BleepDex — tap any control to learn what it does.