This thread will be a handy for all our legend owners and highlight some feature they may not be aware of. The audio unit is equipped with Centrepoint technology. This is made by Bose and converts the standard 2 channel stereo output from a CD and converts it into 5 channel surround sound output digitally, but although the audio unit will play MP3 and WMA discs.The Centrepoint system will only play these in standard 2 channel stereo format and will not allow the Centrepoint function to be activated. So if you wonder why your MP3 sound quality is poor you now are aware of it How to test Active Noise Control system on your Legend? The audio unit on the KB1 also controls the Audio Pilot Active Noise Control system, which reduces cabin noise levels electronically. The system uses 2 internal microphones to pick up and analyse cabin noise.The system then sends out via the audio unit the opposite sound the 2 separate sounds then cancel each other out and reduce cabin noise (this system will reduce most types of cabin noise but will not eliminate all noises). To test this system you need to firstly switch the ignition on and have the audio unit off, Hold down preset buttons 1 and 6, together, and then switch on the radio, then release the preset buttons, press button 1 again (to display the ANC function menu) and turn the ANC to off, you should hear a HUM from the speakers. Repeat this with the engine running and you won‟t hear the HUM.. this step confirms the system is operating correctly.