I need advice finding an IEM that operates without batteries. Im seeing lots of endorsement for the Rolls PM351/Shure PSM200 setup, but, the Shure needs a 9V battery. Hard wired is OK. Body pack feature is OK, but not essential. From what most everyone says here, an output limiter is a must. I need 3 inputs; my bass, vocal, and the full band mix. Ive heard about the Rock On Audio Tasty Blender, and that sounds ideal, but I havent seen much love for it here on TB. So guys, what are my alternatives?