TC Electronic Crescendo Auto Swell Volume True Bypass Guitar Effect Pedal | Reverb UK
Pigtronix Gloamer: Auto Swell with Spicy Surprises!
Auto Swell (EMM Nov 81)
tc electronic Crescendo Auto Swell – Thomann UK
Someone showed me this circuit and it's a cool addition to this library. It's an old project from Ele… | Diy guitar pedal, Electronics mini projects, Guitar effects