4 Channel Amplifier. 200W per Channel. Stereo- Mono- Bridged or 3 Channel Mode. Class D Amplifiers. Low/High Pass Filter On/Off Switch for Satellite & Sub Speakers. Plastic Cover Included to Prevent Access to Control KnobsMains Input: 230Vac- 50Hz Power Stereo Mode: 4 x 200W (4 Ohms) or 4 x 100 (8 Ohms) Power Mono Mode: 4 x 200W (4 Ohms) or 4 x 100 (8 Ohms) Power Bridge Mode: 2 x 400W (8 Ohms) 3 Channel Mode: 2 x 200W (4 Ohms) or 2 x 100W (8 Ohms) + 1 x 400W (8 Ohms) Signal Input: 3 Pin XLR Signal Output: Speakon Dimensions: 483 x 240 x 44mm Weight: 4.7Kg. A professional 4-channel power amplifier in an compact 19″ 1U metal case. Each channel can deliver 200 watts into 4 ohms. This amplifier can work in bridged and parallel modes. There is 120Hz high pass and low pass filter for connecting to satellite speakers or subwoofers. There is DC fault- high temperature- overload and short circuit protection. A plastic cover (included) can be installed to prevent access to the level knobs for use in installations. Connections are via balanced XLRs and speakon outputs.. amplifier-power amplifier-4 channel amplifier