4 pole mission. Unexpected Filter Behaviour

I’m testing the Beast now finally. Everything seems to be good, except in any of the high pass filter modes I get a huge reduction in output level. Perhaps I am missing something totally obvious, perhaps it is something more…

I double checked parts and solder joints. All looks good.

Any tips?

Do you get roughly the same level in low-pass mode with cutoff = 127 and in high-pass mode with cutoff = 0? A high-pass removes the lower harmonics of a sound. Most sounds have much more energy in the lowest frequencies than in the higher - so the high pass filter will affect them drastically.

Yes, I did have the same though, but didn’t think of using that method to test. Will try out and get back asap