... record at MP3 format3. Music sources: MP3, FM, SD card 4. 6 channels, each control one channel 5. Connect PC with USB ... interface, download and updated music freely 6. Play music on time: according to the work program set ... , 3 AUX inputs, 1 AUX output with 70v/100v outputs, 4-16Ω output, LED level indicator9.Also passed ISO, CE.CCC ...