I recently went wireless with my band and love it, but I am struggling to get a clean guitar sound through my IEM's. I'm using a set of Etymotic HF 5's that I've had and while the vocals sound pristine, my guitar sounds clipped. My guess is that the ear buds need to be upgraded. I went the custom IEM route a few years back and really did not like the hard shells. I would probably purchase custom buds for a new set.