External Sub-Octave is Booming

Hey folks,

So this question likely has nothing to do with Neural’s software, but I am hoping that someone else has experienced this. First, my signal chain:

Guitar —> Pedalboard —> Audio Interface In —> Neural DSP Software —> Audio Interface Out —> Line 6 Firehawk 1500

I really enjoy throwing on a sub-octave pedal with a reverb now and again. All of the sudden yesterday when I throw on any sub-octave (Sub’n’up or Eventide H9) the audio whether out of my studio monitors or amp are booming loud and actually distorting.

I looked over my audio interface settings and nothing seems to have changed. Any ideas?

Thanks in advance!