I am having problems finding a 3.5mm male to 4.4mm female adapter for my (otherwise excellent) balanced 4.4mm Open Heart cables for the X3.To the best of my knowledge a new package will come with both cables; mine included both cables. In my case I than had to buy a 2.5mm to 4.4mm adapter to use them with my iFi Zen DAC V2 in balanced mode, a pairing I would highly recommend.
I've tried the one for the Shanling M0 Pro (TRRS) but seems to be proprietary (?) / didn't work (sound comes from right ear cup only, though can come from both if placed at intermediate positions). The GUCraftsman (TRS) didn't work either (sound comes from left ear cup only, no matter at what position).
Any suggestions of adapters that do work or ideas as to why these adapters wouldn't? Cable is working finely with my DAC/AMPs.
The Geekria is unfortunately not available in 3.5mm to 4.4mm.