Hi there.
For live solo performances I use ST3. I feed the board with iPad stereo output. (headphone jack)
Stereo imaging is correct.
At home I use MacBook air connected to Scarlet 6i6 via usb . Any stereo source (Logic - QT player, etc) Images left-right correctly.
ST3 sends to left channel only.
Stereo song routing sees the 6i6 usb
Ive tried all the logical tests.
what Am I missing??
Thank You
