Technical specifications: 1. Support sampling rate (KHz): 8/11.025/12/16/22.05/24/32/44.1/48 2, 24-bit DAC output, dynamic range support: 90dB, SNR support: 85dB 3, fully support FAT16, FAT32 file system, maximum support 32G TF card, support 32G U disk, 64M byte NORFLASH 4. A variety of control modes are available. IO control mode, serial port mode, AD button control mode 5. The broadcast language insertion function can pause the background music being played. After the ad is finished playing, return to the background sound and continue playing. 6, audio data sorted by folder, up to 100 folders, 255 tracks per folder 7, 30-level volume adjustable, 6-level EQ adjustable

application: 1, car navigation voice broadcast 2, road transport inspection, toll station voice prompts 3, the railway station, bus station security check voice prompts 4. Voice prompts for power, communication and finance business halls 5, vehicle in and out channel verification voice prompts 6, ** border defense channel voice prompts 7, multi-channel voice alarm or device operation guide voice 8, electric sightseeing car safe driving voice notice 9, automatic alarm of mechanical and electrical equipment failure 10, fire voice alarm prompt 11, automatic broadcast equipment, scheduled broadcast