This is a high-end cable from ivipQ, with a 2-pin 4.4mm balanced plug. The conductors are: Single crystal silver-plated palladium (10%) + rare earth alloy copper (5%) + high conductivity 7N OCC (60%) + oil-immersed graphene-plated palladium (20%) + rare earth alloy (5%). I am selling it because I haven't used it much. The terminals themselves have minor scratches that are not very noticeable, but there are some spots of rust on the plating of the plug cover and the splitters. The operation itself is not a problem. Details: https://ivipq.com/products/ivipq-03-flagship-cable-hifi-earphone-upgrade-cable-multi-element-conductor-with-mmcx-0-78mm-2pin-n5005-ie900-for-f1-akg-mk4-iem?data_from=product_detail&variant_sku_code=55580-44837-254354-0-0-0-0