Douk Audio Tone HiFi Bluetooth 5.0 Digital Amplifier USB DAC Headphone Amp Stereo Audio Amp

Notice USB and AUX mode only can be chosen and available when the USB or AUX port connected to audio source device. Default with DC 19V power supply enough for 3-8 inches home speakers, but floor and stage speakers may need higher power supply, please prepare by yourself.  Features  ① Multi-function and amazing performance Supporting multiple inputs (RCA/AUX/USB/Bluetooth) and outputs (speaker/headphone), can as USB sound card supporting computers (no need for driver) and phones (with OTG function) input, almost can meet all kinds of home audio system device. Upgraded Bluetooth to 5.0, achieve faster transmission speed, more stable signal and lower consumption, perfectly compatible with various Bluetooth devices. ② Hi-Fi sound and strong power With best HiFi sound among similar amplifiers in the market, thousands of times tuning taking lots of time to bring excellent listening experience. The sound is clear and clean without any audible noise even at the highest out