Integrate 2017: Cambridge Audio Talks About Qt 100, Qt 300 and Qt 600 Sound Masking ControllersAugust 31, 2017 | Home / August 31, 2017 rave-video / Integrate 2017: Cambridge Audio Talks About Qt 100, Qt 300 and Qt 600 Sound Masking Controllers Look in: Integrate Integrate 2017: Cambridge Audio Talks About Qt 100, Qt 300 and Qt 600 Sound Masking Controllers