Firestrike

Hey, Just recently i got the preamp too and somehow directly stumbled into a problem i don't know how to solve. I got a board with a patchbay, a Rockboard in my case and i would really like to patch die Inputs A and B to the patchbays Inputs. However if you plug in a cable into the preamp it activates the channel, even without an Instrument at the end. That causes a buzzing noise on the empty but now activated channel. I've red i could plug something like a dummy plug into the bay with an resistor, to kinda simulate an plugged in an instrument, so the buzzing stops. At least as long you don't wanna plug something in later. If i do so that also means that i couldn't switch the EQ on one input if i only wanna use one because Input B would be activated too because of the dummy plug. So thats why i wanted to ask if someone faced a similar problem and maybe solved it or got enough knowhow on electrics to tell a solutions. Best Regards! P.S. The idea of the board btw. was, that i can use two basses on the gig, both plugged in on their own channel, so i never have to unplug something, but at home or in rehearsal situations i could use only one cable and just switch between the A/B Setting depending on which bass i got plugged on that one cable.