Yamaha P3500S P-Series Dual Channel 450W x 2 Power Amplifier. In good shape. Tested working. General Information: 2-channel Pro Audio amplifier power output at 20-20,000 Hz: - 350 watts RMS per channel at 8 ohms - 450 watts RMS per channel at 4 ohms - 900 watts RMS (mono) at 8 ohms in bridged mode power output at 1 kHz: - 390 watts RMS per channel at 8 ohms - 590 watts RMS per channel at 4 ohms - 1180 watts RMS (mono) at 8 ohms in bridged mode - 2000 watts RMS (mono) at 4 ohms in bridged mode frequency response: 20-50,000 Hz (-1.5 dB) signal-to-noise ratio: 102 dB Features: - independent right- and left-channel level controls for precise volume matching - variable high- and low-pass crossovers for each channel (25-150 Hz) - variable speed fan for heat dissipation - DC, short circuit, and overload protection with automatic reset - front-panel LEDs indicate Power, Active Status, and Protection Warning for easier troubleshooting - rack mount ears included Connections: inputs: XLR and 1/4" TRS for channels A and B outputs: Neutrik Speakon jacks, 5-way binding posts, 1/4" jacks Other Information: weight: 33.1 lbs. dimensions: 18-7/8"W x 3-7/16"H x 17-15/16"D (2 rack spaces)