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audio - DIY mixer - use diodes to prevent input potentiometers influencing each other - Electrical Engineering Stack Exchange
How to Build an Audio Mixer - Circuit Basics
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Making an Audio Mixer : 20 Steps (with Pictures) - Instructables
AIYIMA 4 Möglichkeiten Stereo Mixer Bord Audio Quelle Reverberator Fahrer kopfhörer verstärker Mischen Bord DIY Vier eingänge einem ausgang _ - AliExpress Mobile