The UNI-UPDS combines the universal PDS-PLUS mount with an ultra-short-throw wall mount. The UNI-UPDS extends 18 in. from the wall. Easy to mount to dual studs at 16 in., 18 in. or 24 in. spacing, it does not require a stud located in the center of your whiteboard/screen. The included Compact Power Amplifier, CPA-50, powers the speakers and supports multiple stereo inputs for connecting to a projector, microphone and other sound sources.