Before I get a lecture on the difference between the two that'll I'll completely ignore can someone tell me if there is a box I can use to switch them so when I run two amps in stereo they'll play nicely together? I noticed that my recorded tone was a bit thin and then I switched the phase button on a preamp with one of the mics and it all sounded huge. I think my tone is pretty big sounding in the room but it would be nice to have a box just to switch and compare the two and if I need it I'll just put it on one of the amps. I tried googling it and all I got were phaser pedals and wiring schematics for pickups neither of which apply to me. I'm running out of a stereo Neunaber pedal but I think the issue might be an amp or the cabs if it's even an issue at all...just a simple box so I can A/B the difference between the phase/polarity.