... 1, the product is suitable for computer, notebook, MP3, MP4 and other audio players, standard audio input interface configuration. 2, the ... class D amplifier circuit, wide range, natural sound and delicate, soft and fresh, clear and crisp, is a good tool to enjoy the music ... , support for multiple audio players 5, the product looks elegant, stylish, easy to carry. 6, the product comes with USB power ...