AMP downlead cable — Fischer 10-pin to U-174/U monaural plug. Single-channel audio. Standard configuration for most tactical radio setups where mono audio is sufficient. System Setup AMP Headset → This Downlead → PTT → Radio Use our PTT Configuration Guide to match the correct PTT for your radio. Specifications Fischer 10-pin on headset end U-174/U monaural plug on PTT/radio end IPX7 sealed connectors Monaural wiring — single audio channel U-174/U terminated downleads are compatible with Disco32 Constant Able PTT adapters. Note: Connectorized AMPs require a downlead cable. Fixed-downlead AMPs have the cable permanently attached. Genuine Ops-Core Product • Gentex Corporation • Made in USA