This is a balanced connection cable with an MMCX connector. The cable itself is 2.5mm, but it comes with adapters to convert it to 4.4mm balanced connection and 3.5mm connection. - Cable Type: Replacement cable - Plug Type: 2.5mm plug - Connector Specifications: Gold-plated connector - Cable Material: Silver-plated copper - Length: Approximately 1.2m Compatible with 3.5/2.5/4.4mm NICEHCK 16 Core Silver Plated Cable Thank you for viewing.