GGMM A1 Portable HiFi Digital Stereo Audio Headphone Amplifier for Android Mobile Phones Mini Audio Amplifiers Music Player

Package:YesRecommended Headphone Maximum Impedance:101-150 OhmType:Mini AmplifierBuilt-in Battery:NoChannels:2 (2.0)Brand Name:GGMMPCM:YesInput Type:LINE IN (AUDIO IN),USBOutput Type:LINE OUT (AUDIO OUT)Bluetooth:NoDSD (Direct Stream Digital):YesModel Number:A1Body Material:MetalSignal To Noise Ratio:120Operational Amplifier Chips Model:MAX97220ADimensions (WxHxD):7.9*0.6*0.3 inchesDAC Model:WM8533WIFI:NoOutput Power:87.6W MaxColor:Grey/Gold/SilverCompatible with:Support Android 5.0 micro usb devices with USB OTG.SNR:>103dBImpedance:16Ohm ~ 150OhmPower current:60mA maxOutput voltage:1460mVTHD+N:<0.013%Frequency response:20Hz-20KHzPlayback performance:24bit/192KHzStyle:Clear