FiiO Headphone Amplifier & USB-DAC K19

The K19 can be positioned horizontally or vertically, and when used vertically, it can also serve as a headphone stand; Bidirectional 12 V Trigger: can be connected with other devices with a 12 V trigger to turn devices on and off synchronously; GND/LIFT ground switch: reduces crosstalk and interference; Two indicator lights on the volume control: to display the sampling rate and for various light effects; Supported Bluetooth codecs: SBC, AAC, aptX, aptX LL, aptX HD, aptX Adaptive, LDAC; The FiiO K19 supports the FiiO Control App