Earlier this month I had a gig and it was the first time I used my DI box, here was my chain of gear and then I'll explain my problem Bass (Stingray 5) - Zoom 607 Effects Processor - Digitech Drop - Ampeg SCR-DI - FOH I don't have a pedal tuner so I used the Zoom Processor as a tuner and just left it in Bypass mode. I used this same setup practicing with the band's PA with no issues. When we set up and got to soundcheck, the sound guy said he was getting almost no signal from me despite the volume on my bass and SCR-DI almost all the way up. When I took the Zoom off of standby and put it on any other setting he got plenty of volume needed. I don't understand why it worked fine in practice but not at a gig. I can only assume the bypass on the Zoom isn't a true bypass and cuts some of the signal out?