Electronic Circuit Diagram

Here the simple mixer with 4 input and 2 op-amps: A basic mixer suitable for mixing microphones or even effects outputs. The overall gain from input to output is one if the pot related towards the input is full up. You can make this a net gain of ten (or any other reasonable gain) by reducing the input resistor towards the second op amp. 10K in this position gives a [...]

This is audio mixer circuit. The circuit is for one channel input, if you need, for example 5 channel mixer, then you need to build 5 similar circuits. Schematic diagram: Component part list:

Simple and cheap mixer circuit. This circuit supplied using 9V power supply. There is high/low-sensitivity switchable inputs for each input channel. Component part list: