The QSC Rmx2450a2 Channel Power Amplifier is a 2 Channel Power Amplifier. It comes in Compact size and up to 2500 watts in two rack spaces or 5000 watts in three rack spaces. High-current toroidal transformers, for greater 2-ohm power and low noise. Independent user-defeat able clip limiters reduce distortion. Selectable low-frequency filters (30 Hz or 50 Hz) protect speakers and increase headroom. Product Specifications: Number of Channels: 2 Power Class: Class H Watts/Side @ 8 ohms: 450W Watts/Side @ 4 ohms: 650W Watts/Side @ 2 ohms: 1200W Watts Bridged: 2400W @ 4 ohms Inputs: 2 x XLR, 2 x TRS Outputs: 2 x Speak ON, 2 x Binding Posts Cooling System: Continuously variable-speed fan, rear-to-front airflow Filters: Yes Rack Spaces: 2U Product Weight: 43.5 lbs. Product Dimensions: 19 x 15 x 3.5 Inches Shipping Weight: 45.5 lbs. Shipping Dimensions (L x W x H): 24 x 21.7 x 5.7 Inches