1. The BMA CT is a patented ceiling tile beamforming mic array that blends in perfectly with today's drop ceilings. 2. Built-in acoustic echo cancellation, noise cancellation, and beam selection eliminate the need for per-beam processing in a DSP mixer - requiring fewer DSP mixer resources. 3. Built-in 2 x 10 Watt into 8-ohm power amplifier conveniently drives loudspeakers.