... Power supply . CE/Rohs MOQ: 3000pcs ♦ Innovative low-frequency radiation and digital low frequency enhancement technology.♦ extraordinary sound quality♦ stylish simplicity Compact, LED ... lights, extraordinary beautiful ♦ Suitable for MP3, PC, TV and CD, ... ratio (Amplifier): >=95dBAConnect by USB and audio, For PC ,notebook ,MP3... *Built in low-frequency ...