# Quad Vactrol VCA for AE Modular v1

Four vactrol-based VCAs in a 1-unit-wide AE Modular module (a glorified prototype!)

- **Seller:** [many small modules](https://www.lectronz.com/stores/many-small-modules), Sunnyvale, California, United States
- **Price:** $45.00 (USD, before shipping and taxes)
- **Availability:** In stock
- **Categories:** Synth
- **HS code:** 92099480
- **Product page:** https://www.lectronz.com/products/quad-vactrol-vca-for-ae-modular-v1

## Images

![Quad Vactrol VCA for AE Modular v1](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NTk2NTAsInB1ciI6ImJsb2JfaWQifX0=--119cb38468145794085bfa52fc81bbd16a450f53/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/2025-07-20T23-36-41.247Z-Photo-20Jul-2020-202025-2C-204-2015-2059-20PM.jpg)
![Quad Vactrol VCA for AE Modular v1](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NTk2NTEsInB1ciI6ImJsb2JfaWQifX0=--cf18f0b18c8ef0b7d16584c0d7715c2ee883b887/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/2025-07-20T23-36-41.247Z-Photo-20Jul-2020-202025-2C-204-2003-2019-20PM.jpg)

## Description

This is the most basic possible vactrol-based VCA circuit, times 4, in a single AE module. It's very simple-- audio signal to one input, a CV to the other to control the volume, and an output. There's a switch to change from VCA to low-pass gate mode, but it's not a true LPG-- it provides a little high-frequency roll-off. 

Because these are vactrols, they have a nice plucky sound and you can ping them with a trigger and get a little bit of a trail, or you can use them as a pretty much standard VCA. 

I built this because I wanted a bunch of vactrols in a single AE module, and here it is! These are, more or less, the prototypes. There may never be another version. 

I can provide the STL for the faceplate in case you want to customize it, replace it, or make your own.

This module is quickswap case compatible.

## Shipping policy

I usually ship within 3 days but it may take longer depending on personal circumstance. I am one guy; please be patient but don't hesitate to send a message if you need to know your order status.

I am currently only shipping in the US due to tariffs and the EU's rules on stuff shipped into EU countries and the requirements for recycling representatives. I will enable EU shipping again when that is resolved.