The Astatic 2220VPW Boundary Microphone will install into any 3" thick surface including table tops, podiums, meeting tables and more. The 2220VPW features a continuously variable polar pattern, giving it the range necessary to capture at any angle. Its internal low-frequency roll-off aids in eliminating the surface reflection noise associated with some boundary mics. The sensitivity, frequency and tonal response accurately captures and reproduces speech with pristine clarity and detail. A standard 3-pin XLR connection is recessed into the microphone base.