This is a custom version of our HC-8 cable, sized for the popular bluetooth dac / amp clip ons like the Qudelix 5k, ES100 etc. I use something like this almost every day. It's a great set up. Testing the waters here in the boutique, let us know if you'd like us to provide more cables like this (for other headphones too) regularly. This cable features a right angle [F] 4-pin mini-XLR and is terminated to a 2.5mm connector. Balanced!