A.Introduction HD-276K are digital power amplifier and with switching power supply module. Advantages as bellows: *Class-D and switching power Design for high efficiency, high stability & lighter weight. *Output power : 20W~60W / 8ohm x 2CH *Easy for application B.Application 1.Active speakers 2.Musical instruments amplifiers bo Amplifier 4.Powered professional speakers 5.Monitor speaker C.Features 1.AC Input full range 100V ~ 240V 2.Short circuit protection 3.Over-current protection 4.Thermal protection 5.RoHS compliant D.Specification 1.Output power …20W~60W / 8ohm stereo@THD 1% 2.S/N Ratio @ rated power...> 100 dB @ A-WEI 3.THD @ -3dB rated power ……………………………… < 0.1% 4.Input sensitivity ………………………………………………… 1.5V 5.Input Impedance ……………………………………………………… 22KΩ 6.Frequency response 20Hz ~ 20K Hz …………………………………… +/- 1dB 7.Dimension: 116(L) x 85(W) x 44(H) mm