【Dual 20-Band Stereo Equalizer】Accurate real-time audio spectrum analysis with dual 20-band display. Each frequency uses 20 LED lights for precise level monitoring and arbitrary adjustment. 【Versatile】Fashionable LED spectrum display, long light/marquee function, more beautiful and dynamic. USB/Bluetooth multi-function playback options can better meet your needs. 【Noise Reduction】Audio equalizer effectively reduces unwanted background noise, enhancing clarity and fidelity in audio output. 【Widely Used】This audio spectrum analyzer is an accessory for home theate, KTV venues, music studios, and DJ equipment as it provides both visual and auditory feast. note：This product does not support 110V voltage. Please do not place an order if the voltage is not compatible, otherwise you will need to provide your own transformer.