This UHF wireless unit has worked flawlessly so far, EXCEPT, our bass player has the same model. We each set our units for different frequencies. Ok, great so far. No interference, UNTIL my guitar, with this wireless unit, went unplayed for about 30 minutes while I used my main 'wired' guitar for a group of songs. Well the auto shutoff kicked in and as soon as that happened, the bass guitar started feeding my wireless receiver and his audio was now coming out of my Bose L1 Pro32. Evidently, wh...