Kappa mono and full range, multi channel amplifiers deliver the efficiency and power you expect from Class D amps and the performance you expect from Infinity. Each model in the lineup will accept both high level or low level inputs, allowing the JBL Stadium amplifiers to be added to virtually any car audio system, including factory installed systems. The 2-, 4- and 5-channel amplifiers offer Bluetooth audio streaming, exclusive Clari Fi music restoration technology that analyzes and improves the audio quality of compressed files in real time, a multi-pairing Party Mode that lets anyone in the car stream music, and a cabin-mounted control panel. Kappa amplifiers give you the power to shape your car audio experience in new ways.