Onboard USB interface, support USB flash memory, USB mobile hard disk, USB card reader, and communicating with computer.

Onboard SD card holder，support all mobile flash memory cards such as CF, SMC, MMC, SD, XD, and MS memory bar and so on.

Built-in low-pass amplifier circuit with double power supply and it is okay for use to directly connect power amplifier.

Support MP3 file and WMA file. MP3 file supports all layers and all data rate, and WMA file supports all versions starting from V1. 

Use I²C slave communication, user can use common IO port to simulate I²C time sequence control.

Communication interface can connect with another I²C chips in parallel without adding control port extra.

Support the FAT12, FAT16, and FAT32 universal file formats of DOS or WINDOWS operating system, compatible with computer entirely.

Built-in preset equalization, with various sound effects such as classical, pop etc.

Volume regulation with 10 steps.

With LED display used to indicate system information.