We made this 321 board with red snake cover for Markus .
And although it is so compact, it has everything you need: it is stereo capable and even 4-cable capable, the H90 is also in the loop-in path of the amplifier.
We nipped the potential hum problems in the bud by galvanic isolation.
A Captain Little Helper allows switching at the amp. It is much smaller than all the usual foot switches and thus fits on the board in front of the wahwah.
An additional input jack on the right side allows operation even if the transmitter fails.
Once again thought of everything, the experience makes the difference!