Support reading MP3 songs in TF card and U disk. Support independent adjustment of treble, bass and master volume. Supports MP3/WAV format. Supports wireless microphone board(not included). Working voltage:AC 220V or DC 12V-24V. With AUX audio input, can be connected to the computer, phone or CD. Dual microphone input, adjustable reverb, built-in bluetooth and FM radio. Rate Power:100W Power Output:100W-300W Fit for speaker 4-8 ohm, power less then 200W. Plug Type:US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the United States, the Philippines and so on./EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. Voltage:AC100-240V Note:The colors of some accessories are random and cannot be specified, which will not affect the use. Colour:Black Material:Metal+Plastic<br><br>Package Contents: 1 x Amplifier Board 1 x AC Power Cable 1 x Audio Cable 1 x Remote Control(1 x button battery not included) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.