Features 1. Active USB bookshelf speaker. 2. Angled speaker positioning to optimize listening experience. 3. Designed to be slightly elevated for a more suitable listening position. 4. 2_ inch (70mm) mid-range and treble units with dual magnetic circuit design. 5. Master volume with built-in power switch. Textured adjustment knob. 6. USB audio streaming capability and 3.5mm auxiliary input. 7. Wooden enclosure to minimize acoustic resonance. MDF wooden box for a purer sound. 8. Highly efficient, low power consuming Class-D digital amplifier. 9. Inverted tube for a low, more solid curvature gradient. 10. Variety of material is used to achieve harmony, stability and style. 11. Flexible USB or AUX connectivity. Specifications 1. Channel: 2.0 2. Tower Power Output: 2 x2W 3. SNR (Signal to Noise Ratio): ? 85dBA 4. THD (Total Harmonic Distortion): ? 0.5% 5. Sensitivity: AUX: 500 50mV; USB: 650 50mFS 6. Frequency range: R / L: 50Hz-20KHz 7. Interface: AUX, USB 8. Power: USB powered 9. Size: Main Box Box Size: 83 _ 174 _ 140 mm; vice box Case Size: 83 _ 174 _ 133 mm 10. Weight: 1.23Kg