Satisfy your summertime urge to rock out with the Klipsch Rock Speaker. Featuring Klipsch proprietary technology, the AWR-650M speaker ensures the sound comes through just as the recording engineer intended it by dynamically matching your ear's ability to hear lower frequencies. Note; this speaker has two channels of 8 Ohms, so it can connect to both Left and Right channels of an amplifier. It can also be configured as a single channel 4 Ohm or 8 Ohm or even 16 Ohm. Sold in single units