V3320 VCF Documents and Pictures (Patreon)

https://youtu.be/AiwqzL1T_vE 

https://note.com/solder_state/n/n372399e1a0f2

Schematic PDF, BOM and additional photos of the noise module.

I believe that ICs are difficult to buy globally, but are very easily available in Japan.

Ideally, film capacitors with stable performance should be used as capacitors, but ceramic capacitors also seem to work well.