1. 2.1 channel, can drive most home/car/ship/outdoor passive speakers and bass speakers, with excellent sound. 2. Bass control allows you to adjust high and low frequencies separately, with low distortion and accurate reproduction of music, resulting in a smooth and full sound. 3. Designed with main volume, treble, and bass control knobs, it can adjust the sound more finely, making it very interesting and highly playable. 4. Supports and AUX input, widely compatible with various devices such as mobile phones, MP3, MP4, CD players, televisions, computers, etc. 5. Miniature, very suitable for use , in cars, boats, RVs, or on golf, easy to install and play, space saving, and easy to operate. Type:Power amplifier Rated voltage:12V Amplifier channel:2.1 Output impedance:4-16OHM Treble adjustment:supported Bass adjustment:supported Frequency:20-20KHz Resolution:47K Distortion rate:0.4% Signal to noise ratio:80dB Bluetooth:not supported Rated power:40W+40W+40W power:200W+200W+200W Plug Type:US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the , the Philippines and so on. Voltage:AC110V Colour:Black Material:Aluminum alloy Package Contents: 1 * HIFI amplifier 1 * plug 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.