The SES-5DMKII-HOC series have been designed specifically for DSLR Canon 5D MkII users who use 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. Cables are made with premium Canare L-2E5 mini microphone cable. 10"