A4 Portable Subwoofer Speaker Stereo 3.5MM Audio Computer Loud Speaker with Volume Control for Desktop Notebook Mobile Phone

– Only need one USB port to supply power, fully compatible with 3.5mm audio port, so devices, desktop computers, notebooks, mobile phones, MP3, MP4 and other multimedia devices.
– Lightweight and portable, stylish, line controlled volume.
– Simple design, easy to install and use.
– Powerful shocking subwoofer, restore natural sound, vivid levels and tremors.
– Built-in high efficiency power amplifier PAM8403 with 3D intelligent noise reduction technology,Use two channel sound to be more stereo.

Speaker Impedance: 4Ω

Power Supply: 5V 1A

Signal To Noise Ratio: > = 60dB

Distortion: < = 0.3% (1W 1KHz)

Input Sensitivity: 600 +/- 100Mv

Power Supply Mode: USB

Place of Application: Desktop, Notebook, Mobile