Thanks Flick, how should I go about sending it in?

I can’t speak for the other guy, but I’ve adjusted every knob on every effect, it was one of the first things I tried. I’d tell you where they were but I adjust them daily and my presets are all different, but the volume drop is consistent throughout.

The past couple months I’ve found a bit of a workaround in that my MXR KFK 10 band EQ has dual outputs, and if I run both into the Cathedral and go mono out it seems to boost it up. However, if I run stereo outputs on the Cathedral the volume drop returns, as well as mono in and mono out (I’m using the correct mono input/output sockets as per the instruction manual and labels, though I’ve tried the others as well).

The volume drop is also there when I just run the Cathedral by itself between my guitar and amp. I thought perhaps my other effects weren’t playing nice with it, but the problem remains the same. I’m also using the included power adapter that came with the Cathedral, so I don’t believe it’s a power problem. I’ve tried Boss adapters and daisy chaining it as well, and didn’t notice any change.

I’m running low on ideas Still love the pedal though.