InfoComm 2019: AudioControl Adds Signal Detection Switching (SDS) to Director Series Amplifiers June 14, 2019 | Home / June 14, 2019 rave-video / InfoComm 2019: AudioControl Adds Signal Detection Switching (SDS) to Director Series Amplifiers InfoComm 2019: AudioControl Adds Signal Detection Switching (SDS) to Director Series Amplifiers