My Variax 500 died and parts are not available to repair it. I am looking to buy a Standard or JT and see the battery is integral to for powering the new models. Will the old foot switch/power supply/stereo 1/4" cable from a 500 power the new models? I like not having to rely on a battery and also being able to route the signal via the foot switch to an amp and PA via the 1/4 and XLR outputs. Haven't been able to determine this from the product info.