BSS BLUAECIN 4 Analog Input Mic/Line Card for Soundweb London ChassisThe Soundweb BLUAEC IN London Acoustic Echo Cancellation (AEC) Input Cards are designed to populate any of the four card slots on Soundweb London BLU 800, BLU 805, BLU 806, BLU 320, BLU 325, BLU 326, BLU 160 and BLU 120 devices. These AEC Input Cards enable Soundweb London devices to cancel acoustic echo arising when sound from a loudspeaker enters a microphone in the same room in a conference application. Like the Soundweb London Analog Input Cards,