3360 Dual VCA (Voltage Controlled Amplifier)

3360 Dual VCA

The 3360 Dual VCA Eurorack PCB and Front Panel Kit is a compact DIY voltage-controlled amplifier module built around the classic CEM3360 or AS3360 VCA chip. It provides two high-quality, independent VCAs making it an essential utility for shaping dynamics in Eurorack systems.

Key Features

• Eurorack PCB and front panel kit
• Based on the CEM3360 / AS3360 dual VCA IC
• Two independent VCAs
• Separate audio inputs and outputs for each channel
• Dedicated CV input per channel
• CV normalisation: CV input 1 is internally routed to channel 2 when CV input 2 is left unpatched (stereo VCA)
• Compact 6HP format
• Front panel made from PCB material, screen printed by hand

VCA Operation & Control

Each channel operates as a high-quality voltage-controlled amplifier, allowing precise control over audio levels using envelopes, LFOs, or other modulation sources. This makes the module ideal for:

• Amplitude shaping
• Dynamic modulation
• Audio gating
• General signal control

The internal CV normalisation allows both VCAs to be controlled by a single CV source without additional patching, while still supporting fully independent control when needed.

DIY Build & Front Panel

This intermediate-level Eurorack DIY kit is suitable for builders with prior soldering experience. The circuit is straightforward and reliable, making it a solid choice for those looking to add essential VCAs to their system.

The front panel is constructed from durable PCB material and hand screen printed, ensuring visual consistency with other Guru Gara Synth modules.

Technical Specifications

• Format: Eurorack
• Width: 6HP
• Skill Level: Intermediate
• VCA Core: CEM3360 / AS3360

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