garfy wrote:connect the L/R outputs from the Helix to the L/R line inputs on the back of the AXE I/O.
A couple of things to note, the Line Inputs on the AXE I/O are balanced only, so balanced cables would be needed. Shouldn't be an issue since the HX Stomp stereo outputs can be both balanced and unbalanced.
The other thing that I learned quite quickly when I got my AXE I/O is that only one input source (Instrument, XLR or Line) can be used at a time and it's hardware switchable. For example, if you have a guitar instrument cable connected to channel #1 in the front and an XLR mic cable connected in the back, and say, a permanent balanced line cable connected to an effect rack, only the instrument input will be active. The only way to use the microphone XLR input is to unplug the guitar cable from the front, and the only way to hear the output from the effect rack plugged into the balanced line input is to unplug the XLR cable.
It's hardware switchable, so XLR trumps Line and Instrument trumps XLR and/or Line. I wanted to have things plugged in at once, and not have to unplug anything, but it doesn't work that way...
Dave