Unpair amp from 360 box hope this helps someone.

Hi   - I am a new forum member and I'm posting this message as it may be helpful to anyone who has had similar issues.   I've just received my 360 box and on setting up I chose to pair the amp with the TV.  A major mistake as the sound quality on my new amp was vastly reduced especially sound from the subwoofer. After spending hours trying to unpair the two  I finally found a solution which works for me and might help others. 

Instead of using the 360 remote I went into our Denon amp settings which were previously configured with a Sky box using the audio sync settings.  I plugged the mike back in and did the audio sync again then re-set the room speakers. This has given us back the sound quality we had before pairing.