The Premier Mounts UNI-ESPI-AUD combines the universal SpiroLock projector mount with a universal short-throw projector wall mount and powerful stereo audio system. The UNI-ESPI-AUD extends up to 67 in. from the wall when used with the included arm extension. Easy to mount to dual studs at 16 inch, 18 inch or 24 inch spacing, it does not require a stud located in the center of your whiteboard/screen. The included CPA-50 Compact Power Amplifier powers the speakers and supports multiple stereo inputs, which make it perfect for connecting to a projector, microphone and other sound sources.