This is a 4 wire adaptor designed to adapt headphone cables to fit a different connection. Please to not try to plug a single ended ( not balanced ) cable into a balanced amp as it may damage some amplifiers. So... going from one balanced connection to another is fine, plugging a balanced headphone cable into a single ended source…
This is an audiophile grade, ultra-low capacitance cable for connection between the Audeze LCD-2, LCD-3, LCD-4, LCD-4z, LCD-MX4, LCD-X and LCD-XC, Meze Empyrean, most ZMF and Kennerton headphones and a standard TRS 3.5mm or 6.3mm jack. The cable is made using 84 strand litz copper, wrapped in coloured paracord of your choice, and hand braided here in the UK.