Sorry, off the Helix subject here - We use the X18 Air as well but use the 6 bus outs for in-ear monitors 'cause we can each control the bus mix. Only issue we have is distortion and drop out when the whole mix is in full swing (on-board compression I believe). Although the recording quality in great! Anyway, wondering if you dealt with any distortion issues monitoring wise - any insight?
I have though about taking the X18 mix and remixing my Helix separately into my in-ears, or going right mix, left Helix b/c the bus-outs can sound like mush with a 6 pc band.