Technicalparameters:AmplifierType:Tube+VMOSClassAOutputpower:>500mWFrequencyresponse:20Hz-35KHzHeadphoneImpedance:32Ω-300ΩSNR:>90dBTube:2P2J(canreplacedbySovietUnion2N2N)USBInput:CM108(supportUSB2.0)DAC:TDA1305TLinei