The Sparco IS-150 BT Digital Intercom Amplifier is a high-end professional digital noise canceling intercom with selectable trim levels and Bluetooth connection. It has independent volume adjustment for the driver and front passenger, military-grade nexus connectors for reliability, and an RCA output for video devices or in-car camera systems. Complete dash and roll bar attachment with anti-vibration pad Digital noise cancellation High quality Nexus connectors. Independent volume adjusters Bluetooth connection for pairing with mobile devices and a 'race' mode that disables mobile communication during special stages. Compatible for use with Sparco, Bell, ZeroNoise, Peltor or intercom headsets and also Stilo when used with an optional adapter. Connects to a 12v vehicle supply and a 9v backup battery if required.