As I said the 7500 does it all right from the headphone and shows bars that light up on the transmitter. Sony went backwards by requiring you to go to an on-screen menu every time you want to make an adjustment. Had I known this I wouldn't have bothered.It works trust me, I did it yesterday morning to up the LFE channel. It’s an uncomfortable and janky way to change things on the menu but it works.
Btw this is one of the main things where the JVC’s blow the Sony’s out the water...being able to change things on the menu via an app instead of using this ridiculous system of wires to get to the Sony’s menu is huge
Waste of money.
Back on eBay it goes I guess.