JobSite A45-X2 2-Channel Stereo Amplifier (Discontinued by Manufacturer) 2-channel stereo amplifier designed for multi-room distributed audio systems Each channel (45 watts x 2) includes an individual gain control for precise signal matching Low-impedance stability (2.66 ohms) for powering two pairs of speakers at once Multiple turn-on modes for maximum system flexibility; gold-plated 5-way binding posts 10 Hz to 100 kHz frequency response; measures 17 x 2.31 x 13.12 inches (W x H x D); 2-year warranty