C-Mark CE approved digital power amplifier is based on PWM technology that has been used for 30 years or more in power supplies and inverters.PWM provides high reliability, small size, low weight and high efficiency. Compared to a conventional amplifier, C-Mark digital amplifier technology offers very high efficiency and delivers more power to the loudspeakers with much reduced heat dissipation.This greater efficiency enables dimensions, weight and power consumption to be reduced.The output stages of the amplifier typically run at 95% efficiency. C-Mark digital amplifier is switch mode power supply, stable and cool with abundant power, and uses very high sampling frequencies to obtain high performances across the audio band. Designed with multiple protection circuitry:Such as direct current protection, short circuit protection, thermal protection, radio frequency (RF) protection, efficient snail style thermostat controlled automatic cooling fan for heat emission. Specification: Power: 2 x 1000W/8Ω, 2 x 2000W/4Ω, 2 x 2300W/2Ω S/N signal to noise ratio:105dB GAIN: 30dB-33dB (T series digital amplifier are provided three gain selection for connection of different load usage. Low impedance connects low gain to prevent exceptional protection) Frequency response: 20Hz-20kHz (+1/-2dB) Damping factor: 300@1kHz Input impedance: 15kΩbalanced Global voltage AC 100V-240V 50/60Hz Cooling Mode: compulsive cooling (4 Temperature-control fans) Input connector: Neutrik balanced XLR Output connector: Neutrik SPEAKON connector Control: 2 channels volume control (front panel), gain selection (rear panel) LED indicator: level indicator, malfunction indicator, overheat indicator Dimensions: 483*400*44mm W*D*H Weight: 9.8kgs