... 2.Top acoustic fidelity 3.Multifunction 2011 Latest Portable Bird Music box: Features: 1. The product is suitable for computer, notebook ... of high-performance, low power micro-class digital class D amplifier circuit, wide range, natural sound and delicate, soft and fresh ... , clear and crisp, is a good tool to enjoy the music. 3. 2.0 hi-fi system, high frequency sound clear ...