NewFantasia 2.5mm Trrs Balanced Male to 4-pin XLR Balanced Female Headphone Audio Adapter for Astell&Kern AK240 AK380 AK320 onkyo DP-X1 FIIO X5III XDP-300R

This is a much better adapter than those from eBay!

I purchased this adapter explicitly to lessen the strain on the 2.5mm connector in my headphone audio setup, since I had bent three 2.5mm headphone cables from different brands within 18 months. The damage was due to a combination of the thinness of the connector and my level of activity (VR cardio games).To this end, this adapter proved to be a perfect solution. It's perfectly rigid when hooked up to a 4-pin headphone cable, and together, the daisy chain is large and heavy enough to be affixed to something as a rigid body, lessening strain on the 2.5mm end. The adapter's cable also has a taut mesh outer covering and spring which also prevent strain on the 2.5mm end by forcing the cable into a wide angle against any kinks.The added weight and rigidity all around prevent the 2.5mm contacts from shifting, resulting in, for at least my case where I'm literally dragging my DAC/Amp around, more consistent sound and less noise.If you're looking for a quality and hardy piece of hardware and your setup happens to only have balanced output to a 2.5mm TRRS, and you're not against added size and weight, I can happily recommend this adapter to protect your setup's longevity.Picture included shows the adapter (top), with the 4-pin connection literally taped to my DAC/Amp to remove strain from the 2.5mm. Note that the rigidity of the adapter's mesh and spring forces the angle of entry of the 2.5mm end to straighten. The 4-pin connection itself is so rigid I see it as the last point of failure.

Works perfect with my Focals Elex and Elegias

Works great- has the right connections for my balanced digital audio player to my aftermarket balanced headphone cable with pro grade x4pin XLR end. I can take advantage of the higher fidelity output on my DAP. The only downside is that the 2.5mm TRRS end is too short and the weight of the XLR connector put too much strain on my DAP jack. It caused the signal to cut out and track selections to skip. You would need an 2.5mm extension cable to alleviate the strain. that's too many connections for my convenience

Was looking for an adapter to use my balanced headphones (XLR) with the 2.5mm balanced out on this b4-x amp. Works as expected. Kind of pricey for what it is.