The two-channel mixer shown in the figure is the ideal solution for cases where we need an economical and efficient configuration. Here we have only two input channels, but nothing prevents the configuration from being expanded by repeating the input steps (C1, P1 and R1). The circuit has a high input impedance and a good gain thanks to the use of a junction field effect transistor. The output impedance is low with a good amplitude signal capable of exciting most common audio amplifiers and other equipment such as transmitters, etc. The input jacks can be of the RCA type, as well as the output jacks.
