Have I done something wrong with the TL072 virtual earth mixer? It does basically nothing for the oscillator interaction but decreases the overall output of the circuit. : r/synthdiy
Help for Virtual Earth Mixer project | diyAudio
Virtual earth summing with transformer | GroupDIY Audio Forum
How to Build an Audio Mixer - Circuit Basics
Op Amp Summing Amplifier: Virtual Earth Mixer » Electronics Notes
Op Amp Summing Amplifier: Virtual Earth Mixer » Electronics Notes
Audio Signal Mixing
Pentode Virtual Earth Mixer 2 by SoulFetish on DeviantArt
very very simple DJ mixer aka summing amp? | Page 2 | diyAudio