Biamp Tesira SEC-4 4-Channel Mic/Line Input CardThe Tesira SEC 4 is a modular analog input card for use with Tesira SERVER or SERVER IO devices. SEC 4 provides 4 channels of mic or line level audio input with Acoustic Echo Cancellation. The inputs are electrically balanced and provided on plug in barrier strip connectors. Carrying on the Biamp tradition of exceptional echo cancellation technology, the SEC 4 utilizes the next generation of the Sona AEC technology. The card also features a new Biamp