The BOSE's FREESPACE ZA 2120 LZ zone amplifier is created to provide basic amplification and sound system expansion when using front-end Bose products such as FreeSpace® integrated zone amplifiers and ControlSpace® engineered sound processors. It includes 2 x 120 W Class-D amplification optimized for low-impedance applications, and remote option for volume control eliminates the need for sound-altering in-line volume controls.