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happens after the buffer, which protects the integrity of the signals connected to those
headers. Both JP2 and JP3 have the same pin assignment:
The toggle switch selects the signal to be displayed (unless, as we said, there’s
something plugged in the front mini jacks). Signals plugged in the MASTER pins go directly
to the toggle switch, signals plugged in CUE and SEND pins go to JP4, there, 2 jumpers
selects which one will be directed to the toggle switch.
If you're a skilled DIY tinkerer, with a little effort you can connect the buffered header
to your TexMix Master Section and have a visual representation of the signals on your
master, monitor or send outputs, soldering wires to the output pins of the jacks: