Colorful USB mini computer / Notebook speaker Built-in active amplifier

Notebook computer speaker usb mini speaker for computer Technical specifications * Power output:3W*2RMS * Speaker: 4Ω 3W * Input sensitivity: 400mV * Distortion: ≤0.2 %( 1W 1KHZ) * Frequency response: 150Hz-20KHZ * Separation:≥78dB * S/N Ratio: ≥80dB * 3.5mm audio output jack * Power Voltage: USB/DC 5V * Optional external power supply (DC5V-1.2A) * Accessories:USB cable, audio cable Features * Built-in active amplifier * USB bus-powered capability, no adapter required *