JBL Professional IRX Series IRX108BT Powered 8" Portable Speaker with Bluetooth The JBL IRX108BT portable powered PA loudspeaker delivers class-leading volume and clarity, total ease of use and an unrivaled feature set. Sound amazing with a custom, pro-grade system engineered to outperform larger competing systems. Real-world EQ presets let you dial in optimal tone in an instant-no experience necessary-and built-in dbx DriveRack automatic feedback suppression lets you crank it up with confidence