²        Adopt DA32UD or DA32UQ decoder to realize digital audio decoding function.

²        One optical fiber digital input, two RCA coaxial digital inputs, and one RCA analog input. Adding power amplifier, transformer, case etc can compose various audio products such as active sound box and bass blaster etc.

²        All functions and operations have power-fail recovery system.

²        Built-in 6-channel second-order low pass filter, volume control, and output mute circuit.

²        Automatically search input signal, volume quick reset function, and remote control function.

²        5.1 channel output, 63dB electronic volume control. For each channel, +/-20dB can be adjusted.

²        Two pieces of 7-segments LED modules and several LED status indicator lights. Multimedia No.1 has six buttons (Standby, input switch, mode, volume +/-, and noise test).

²        Use STC90C58RD+ as MCU, it is okay to upgrade MCU program through serial port and to be used for deb ing.

²        Standard RS232 interface, it is okay to connect computer serial interface or USB serial cable.

²        With rectifier, filter, andvoltage stabilizing circuit., can use DC or AC power supply.

²        Provide dual CPU communication source code.