operational amplifier - Audio mixer design - Electrical Engineering Stack Exchange
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Eddy Bergman.com: Synthesizer Build part-17: MIXER and PASSIVE ATTENUATOR in one.
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operational amplifier - Simple audio mixer - Electrical Engineering Stack Exchange
Create an Active or Passive Audio Mixer | All About Circuits
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audio - DIY mixer - use diodes to prevent input potentiometers influencing each other - Electrical Engineering Stack Exchange
Little Bear MC5 Mini Portable Stereo 4 Channel Audio Mixer Passive Live Studio Console Recording Low Noise (No Power Needed) : Amazon.com.au: Musical Instruments
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Electronic mixer - Wikipedia
