General Specifications: Max Power2300W Peak Bluetooth® Audio Streaming Clari-fiTM Music Restoration Technology Party Mode allows sharing of streaming content Cabin Controls and Telephone Integration High Efficiency, Low Distortion Class D Design Subwoofer Specifications Power Output, 2Ω350Wrms x 1, <0.1% THD+N Power Output, 4Ω200Wrms x 1, 80dB (ref 1W output @ 2Ω) Features Bluetooth audio streaming and telephony support The three full-range, multi-channel Kappa amplifiers (K2, K4, and K5 models) feature Bluetooth connectivity for wireless audio streaming from phones and other devices. You can receive phone calls through your car audio system, just by touching a button on an included control panel. Clari-FiTM audio restoration technology Clari-FiTM, a proprietary DSP technology is incorporated in the K2, K4, and K5 amplifiers, analyzes music files and improves highly compressed digital music files in real time. A predictive algorithm restores audio content that is discarded in the compression process. Clari-FiTM works with all playback devices and audio sources. It extends high-frequency bandwidth, restores the natural warmth of vocals and widens the sound stage. In short, Clari-FiTM gives your digital music back its soul. Party Mode wireless pairing The K2, K4, and K5 amplifiers offer Party Mode, a multi-pairing capability that enables Bluetooth devices to stream audio individually. When Party Mode is selected from the cabin-mounted control panel, anyone in the car can drive the music. Cabin-mounted control panel The K2, K4, and K5 multi-channel amps come with a wired control panel that incorporates an omnidirectional microphone and puts a range of functions at your fingertips. You can activate Bluetooth pairings, accept and end phone calls, select Party Mode and cancel Clari-FiTM.