Eurorack Reverb Module / PCB + Front Panel / Modular Synthesiser

Eurorack Reverb Module

The Eurorack Reverb Module PCB and Front Panel Kit is a DIY effects module designed to add rich, immersive spatial depth to your modular synthesizer. Built around the well-known Belton BTDR-2H reverb brick and paired with a dual VCA stage on the wet signal, it offers both classic reverb tones and advanced voltage-controlled effects.

Key Features

• Eurorack PCB and front panel kit
• Based on the Belton BTDR-2H reverb brick
• Dual VCA on the wet signal, based on a 3360 VCA design
• CV control over reverb (wet) level
• Enables gated reverb, rhythmic modulation, and delay-like effects
• Suitable for a wide range of modular audio sources
• Intermediate-level DIY build
• Front panel made from high-quality PCB material, screen printed by hand

Reverb & Voltage-Controlled Effects

At the core of the module is the BTDR-2H reverb brick, delivering lush and musical digital reverb. The wet signal is routed through a dual VCA stage, allowing the reverb level to be dynamically controlled with control voltage.

By modulating the wet level:

• Use an envelope to create classic gated reverb effects
• Apply an LFO for rhythmic modulation or tremolo/delay-like textures
  

The VCA stage is based on a 3360 VCA design, ensuring smooth, musical amplitude control over the reverb signal.

Creative Patch Possibilities

The voltage-controlled wet path opens up expressive sound design techniques that go beyond static reverb:

• Dynamic reverb swells synced to envelopes
• Rhythmic spatial modulation
• Percussive reverb shaping
• Animated ambient textures

This makes the module equally useful for subtle ambience and more experimental, performance-oriented effects.

DIY Build & Front Panel

This PCB and front panel only Eurorack kit is intended for intermediate builders. Assembly follows standard through-hole construction.

The front panel is crafted from durable PCB material and meticulously screen printed by hand, ensuring a professional finish and visual consistency across Guru Gara Synth modules.

Technical Specifications

• Format: Eurorack
• Width: 8HP
• Skill Level: Intermediate
• Reverb Core: Belton BTDR-2H
• VCA Design: 3360-based (dual VCA (for stereo output) on wet signal)
• CV Control: Wet level modulation
  

Compatible components such as knobs, potentiometers, jack sockets, and other build parts can be found in the Synth Parts category.

• Documents

Video Demo