Stereo Mixer

PAN MIX mixes up to four different mono sources into a stereo output with panorama and gain
control.
It also includes an stereo aux input, which will be added unity gain to the sum for
cascading purposes.

Features:
- 4 mono inputs
- Stereo output
- stereo AUX input (2 mono jacks)

Functions:
- Mixing four mono signals together with gain and panning control into a stereo
output.
- L/R Aux inputs allow to cascade many units to form a mixer having more inputs

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