I was going to order a balanced cable for my Shure SE846 and AK240, but I have a question. What's the difference between ordering a cable with an AK240 plug vs. using an adapter from a standard stereo female mini-jack to AK240 4-pin, so that I can use the cable with and without balanced devices? Do I lose the benefits of balanced if I went with #2?
The wiring from the earpieces to the plug must be balanced all the way - 2 isolated wires for each channel - to acieve a balanced hookup. If you get your new cable terninated in a 4 pin 2.5mm TRRS first for the Blanced jack of the 240...Then get an adapter made (Double Helix or similar) that accepts the 2.5mm TRRS (4 contacts) and converts it to 3.5mm TRS (3 contacts) you will be able to use your setup with non-balanced standard 3.5mm TRS devices, too.
Does that answer your question?