The TEK PA2B is a small, affordable multi-function room amplifier with many features including RS232 control. This compact Class-D digital amplifier has three inputs (two selectable line inputs and one balanced MIC with selectable phantom power). It is integrated with powerful features including speaker bridging, stereo or mono selection, EQ control, a microphone mixer, and simple-to-program RS-232 control. The PA2B is ideal for classroom and training room applications, offering independent level control for each input and efficient control of a full room’s audio without feedback.