Bill,

The Digitech has its own preamp that is built in. You don't need one. Just plug the output directly into the powered speakers, or run it through the Tyros Aux-In.

Dave, I just turned the 3000 all the way up and there is no hiss--it's stone quiet. I then plugged it into my amp, cranked it up all the way--no hiss. Plugged in the Sennheiser E-855, turned up the mic volume and no hiss. Turned my hearing aid up all the way and still no his. Must be something in your set-up. My EQ's are set pretty hot, both the general and mic, so I can't blame it on the EQ.

The real test was to ask Carol if she heard any hiss. That woman can hear a mouse peeing on cotton. She said there was no hiss. If she can't hear it, then it just does not exist. Gotta' be something in your system that's causing it.

Gary