6x relay for amp switching (3 isolated stereo outs)
6x 9V DC output for powering stompboxes (two sections 2x500mA)
Switchable high impedance input buffer (identical with a tube amp, characteristics) at any preset
Tuner out
Loop split
Phantom power mode for powering the GSC-4 thru midi out connector
Midi out and midi in connectors for controlling 10 midi devices independently on different midi channel, adjusting 20 different Midi Control Change numbers for each midi device (10 devices)
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