Dual 3x1 Mixer/Processor
The Top Processor has 3 inputs with attenuation and toggles for inversion/mute. Allowing for full throw of the attenuator for dialing in just the right amount of signal. The Output has a +/-5V offset that can be turned on or off.
The Bottom Processor is the same as the top, but instead of the offset being able to be turned on or off there is a basic saturation/compression switch that can be turned on that allows for some fun effects to be had with audio signals.
Both processors are DC Coupled but can work great for audio signals.