The Harmonic Valve
Harmoninc Valve(?) Ok, more capricious wordplay*. The ‘Harmonic Valve’ is a vacuum-tube-based VCF. The core circuit was inspired by a very nice design from Rene Schmitz, in combination with a few very helpful ideas from Ken Stone. I added a feature that also does some voltage-controlled tube-clipping. The gizmo is huge , about the size … Read more