SMSL Q5 Pro 2x45W Remote Control Digital Power Amplifier USB COAX OPTIC Input 192KHZ 44Bit Color Black Equipped with high-quality remote control, easy to operate. LED digital tube display screen design, easy to read machine status. Remote control or key control function. Pure aluminum made, thorough CNC processing and drawing oxidation process. Computer USB decoding support 24bit, 44.1-96KHZ. Shutdown memory function (Volume not be memorized).