This Module is currently available.
4 Mono channels are mixed down with panning for each channel. The output is a stereo mix. There is an FX send, Line Level type. There are dual stereo pairs for returns. The returns are line level (expected), and internally convert to -5V/+5v signal.
-4 Channel Mixer
-Each Channel has Panning
-Each Channel has FX send
-Dual Pair FX return. Labeled 'Return' and 'Aux'
--5V/+5V signal outputs, with Level Control.
-Stereo Headphone Output
-Bar Graph Indicators for final Stereo Mix Down.
https://www.bluelanternstore.com/store/p146/Mu_5u_Stereo_4_Channel_Mixer.html#/