I love using my Yamaha Silent Brass system. But the earphones that came with it annoy me. Like most earbuds, they don't want to stay in my ear, and the sound quality I get is marginal. I've tried several other earphones and headsets I have around the house, but the sound is very weak out of them. I'm no audio tach, but I suspect what I'm hearing is impedance mismatch. Does anyone here have a tried and proven alternative to the earphones that came with the SB system? Thanks!