I have my Discumbobulator going through channel A in my Boss Line Selector. When selecting just channel A it sounds fine - with or without the discumbobulator engaged. When selecting A + B, without the Discumbobulator engaged, the bass sounds fines (sound from both A, and B channel). BUT: When I engage the Discumbobulator in this mode (A + B), the signal drops drastically (almost half). What would be the possible explanation for this? My levels for A + B channels I've left alone. I find it very odd? I've set up an OC3 infront of the DisBOB, to see if there is something wrong with channel A. No problems. Channel A by itself, with or without OC3, same volume. Channel A + B, with or without OC3, same volume levels. Here is something even stranger. With the OC3 engaged infront of the DisBOB engaged, the volume level is normal. If I disengage the OC3, the volume is half again?!?!? How is it that in A+B mode, the Discumbobulator cuts my signal??? HELP!