I wasn’t sure what to tithe this but Helix had an option that allowed you to send an output to a send do you could have an external tuner on a send. So when you engaged that tuner it would also send to the external tuber. It was a great option for those if us with a Peterson rack, Strobostomp etc. The built in tuner still engaged as well but I like to occasionally use sweetened tunings and use the Peterson for setting intonation.