The SES-5DMKII-HOC series have been designed specifically for DSLR Canon 5D MkII users who employ Magic Lantern firmware in their HD DSLR video workflow. Using Magic Lantern on the 5D MkII enables the AV out port to be used for headphone monitoring during a recording, a must have feature for those serious about audio quality. This specialized cable eliminates the need for multiple adapters that are required with the AV out cable that ships with the camera. Cables are made with premium Canare L-2E5 mini microphone cable. 10" Long.