Ben,
I have had the same experience. If my signal goes thru a tuner, it hurts my sound. I think most of the tuner mfg know this now. Best way is to send signal to the tuner, not thru.
One way is to plug the tuner into the second "out" on the volume pedal. Don't send the signal thru the tuner, just send the signal to the tuner. Sometimes this will still cause a ruckus with my sound.
I keep my tuner ready, with a guitar cable attached, and plug into the second "out" on my volume pedal when I want to check my tuning.
There are other ways, but it starts costing $ and gets more complex.
Hope this helps.
Ron[This message was edited by Ron Randall on 31 October 2006 at 07:09 PM.]