dlazzarini
Well-known member
A buddy of mine just acquired a 9volt external power box made by Highlander Musical Audio Products. From what I can tell it uses a stereo cable from which the ring terminal carries the 9volts from a battery to power the preamp for the pickup inside the acoustic instrument. There is no option on this box for an external power supply. He wants to know if I can add an input jack for 9volt external power instead of using a battery. Normally I would have said no problem but I’m thinking there may be a reason they don’t offer that option. Does anyone have any experience with these power boxes or know off hand if adding external power to the ring terminal on the stereo cable would somehow damage the preamp? Am I seriously overthinking this?