Function Features * With desktop design, elegant appearance, light weight, and easy to carry. * It can be used in different sound effect places. This series include 20W, 40W, and 60W, which can be selected according to room size inquiries. * Unmatched sound quality, it can connect 4~16Ω output, meanwhile it can connect 100V output, not only can play short distance beautiful music, but also can broadcast long-distance beautiful voice. * The output terminal use standard 6.3 audio microphone jack and line input uses RCA jack, to provide users with different audio input interface options. * 1 Microphone input with independent volume control. * 2 audio inputs with independent volume control. * With function of auto play MP3 and power memory. * With function of priority, when MIC 1 input, the other audio signal can be disconnected . * With power indication light, when connect electrical power and turn on switcher, the light turns blue. * With signal indication light and the light can show different color according to different signal. * With protection function of short circuit, over load, over temperature. * With function of MP3 module, readable MP3 files in USB flash disk, SD card. ClassDateTitleLanguageTypeDownloadDatasheet2019-06-04ASA1222G_ASA1222G-D datasheet_0604Englishpdf Support function of mobile blue tooth.