9 Volt Portable Mixer Circuit


Posted on Feb 7, 2014

The objective of this project was to design a small portable mixer supplied by a 9V PP3 battery, keeping performance quality. The mixer is formed assembling three main modules that can vary in number and / or willingness to adapt to the needs of all. Amplifier Input Module: a low-noise circuit equipped with a variable voltage gain (10 - 100) pre-s


9 Volt Portable Mixer Circuit
Click here to download the full size of the above Circuit.

et, primarily intended as input to high-quality microphone is also suitable for line level input on. Tone Control Module: One of three bands (Low, Mid, Treble) tone control circuit provides unity gain when the controls are set flat frequency response. Can be inserted after one or more modules of the amplifier and / or after the main mixer amplifiers.




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