This is a barebone, entry level Eurorack size VCA (Voltage Controlled Amplifier) for people who are curious about modular synths but can't afford the crazy prices . To keep costs down , all components are mostly smd, all on one side and withtout a front panel .
Please watch this presentation first :

https://youtu.be/xb51-3MiOaM

The unit takes an audio in (like from a CVO) an modulates the signal with the CVin (ie: an enveloppe) and outputs the result . It's a double VCA so it offers two VCAs on the same panel. An offset pot allows to control the amount of CVin.

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NOTE!!! :
- To keep prices down, these are sent via normal post from Ireland.
- This listing is for the PCB along with pre assembled SMD components. You will need to source the following from your side.

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6 Jack sockets
1 16 pin IDC connector
2 100K ohm pots

Here's a listing of various sites that can provide these:

ALIEXPRESS :
100K ohm potentiometer : B100K https://www.aliexpress.com/item/1005001961214664.html
PJ301M audio jacks : https://www.aliexpress.com/item/32919567094.html
16 in (8x2) IDC connector: IDC https://www.aliexpress.com/item/1005001400147026.html

EU:
100K ohm potentiometer : B100K
Thonkiconn Mono 3.5mm Audio Jacks or PJ301M : https://www.munichen-audio.de/product_info.php?language=en&info=p62_thonkiconn-pj398sm.html
16 in (8x2) IDC connector:

US:
100K ohm potentiometer : B100K : https://modularaddict.com/parts/9mm-round-shaft-6-35mm-vertical-potentiometers
Thonkiconn Mono 3.5mm Audio Jacks or PJ301M : https://modularaddict.com/parts/pj301m-12-thonkiconn-style-inline-3-5mm-jacks-bag-of-50
Alternative source for Mono 3.5mm Audio Jacks: https://www.taydaelectronics.com/pj-3001f-3-5-mm-mono-phone-jack.html
16 in (8x2) IDC connector: https://modularaddict.com/catalog/product/view/id/2095/s/16-pin-2x8-2-54mm-100-box-header/category/30/

UK
B100K - 100K ohm potentiometer - https://www.thonk.co.uk/shop/alpha-9mm-pots-dshaft/
Thonkiconn Mono 3.5mm Audio Jacks or PJ301M : https://www.thonk.co.uk/shop/3-5mm-jacks/
16 in (8x2) IDC connector :