I'm having problems using, adjusting, and getting used to a wireless headset. I've tried two different units and each has given me volume and screech problems. I assumed that the onboard speakers contributed to the problem, but it continues even when I'm away from the keyboard. AND, the sound quality seems much different than my EV or Shure mics. Anyone have comments or solutions? I'm about to return these units and stay with my handheld hard-wire stuff.

BTW, both of these units are Peavey, a PV-1 and a 16channel UHF unit.