I have made a custom control pannel that has output peak voltage meters for an Itech system consisting of 16 amps. Currently the meters only reflect the first amplifier in a frequency band (i.e. "top box" in the line array) but are rendered useless if those amplifier channels are muted since we are unable to change which amp channel this meter is getting its value from. I want to be able to change which amp the meter is tied to, so that I use the same meter but it is looking at different amp, and to be able to this "on the fly" during the show via a dropdown list or radio button of some sort. Any ideas?