1、You can easily convert the digital audio signal input from the coaxial or optical interface into an analog stereo audio signal with an RCA interface and a 5 mm headphone jack. 2、The built-in professional audio amplifier chip and volume adjustment knob can directly drive the headphones and adjust the volume. 3、The bass adjustment function can provide powerful stereo, heavy bass effects, and create a perfect environment different from the sound field. 4、Eliminate noise when there is no input signal, and automatically mute it when a non‑audio signal is input. Support 192kHz 24bit sampling rate. 5、RCA output interface is connected to the power amplifier system. A channel 5mm audio output interface, connected to headphones.