I use the VL3 with my T4:
Midi out to VL3 Midi in, Mic in to VL3, 2 XLR out into my Mixer for stereo.
My T4 is on channel 2 by default.
I went into set up then Midi on the VL3 and set Midi in to channel2.
I had the VL2, so I was very familiar with the set up.
However, there is a learning curve for editing.
Tons of YouTube videos on how to use it.
Hope this helps
Eric
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Genos, PSR-S970, TC Helicon VoiceLive3, Mackie 802-VLZ3 Mixer, 2 Bose L1 Pro16, Electro-Voice ZXA1 Subwoofer