I just purchased a Spector Euro5 with an Aguilar OBP1 preamp (used) and I'm having trouble making it play nice with my Boss GT-6B effects pedal. When I plug the bass in, the pedal does not respond to commands such as patch changes, tuner on/off, etc. unplugging the bass makes the problem go away. I went to Boss (Roland), Spector, and Aguilar with the problem and they're stumped, as is everyone I've mentioned this to locally. I have tried: --a different bass (my Modulus Q5, which performs normally) --a different amp (my GK110-no change) --a different cord (no change) --a different configuration (bass-->GT-6b-->amp, and bass-->amp-->effects send/return-no change) I have noticed that the signal frpm the Spector bass is much hotter than the Modulus, but the problem still occurs (with the Spector) when there is no signal, i.e the strings are silent because I have my hand on 'em. Thanks in advance.