Main feature: 1. Class d digital technology with high efficiency, save energy and run in low temperature. 2. Balanced input xlr stereo (two ways) has two modes for selection, one is stereo and the other is bridging. 3. Functions of independent limiting, overload, overheating will protect the circuit. 4. Using ntc soft start up and pfc automatic voltage regulator circuit, so that it can work in ac-90v-240v. 5. Every channel has protection function for over voltage, overheating and overload. 6. Automatic limiting function can prevent the speaker from being damaged. 7. The class d amplifier performs surprisingly with the driving bass. 8. Equipped with high quality imported components. Technical specifications: Noise:20hz-20khz Operation mode: knob control Channel:2 channels Stereo output power 8o:1000w+1000w Stereo output power 4o:1800w+1800w Stereo output power 2o:2000w Bridged output power 8o:3600w Bridged output power 4o:4000w Frequency response:20hz-20khz±1db Thd+n (10%-1khz): < 0.1% Sr:>20v/µs Noise insulation factor (1khz):>250 Dynamic range:=95db Snr: =95db Input sensitivity: 2vrms Input impedance: balance 20k / unbalance10k Power specification: ac 90-240v 50-60hz (±10%) Packaging info.: Net weight: 20kg Gross weight: 23.65kg Quantity/ carton: 5pcs Packaging details:carton with plastic bag inside Packaging size: 560(l)×280(w)×410(h)mm