... 2.1 speaker system with amplifier1. Classic again, MDF & aluminium, built-in antenna, shortest latency (<0.5ms), 10 meters wireless transmitter.2. ... 5.25 speaker structure, undertone stronger, output is 30W3. Black with red aluminium line, it is more fashionable.4. Volume part ... . Back part, clear cables hole.6. Round edge7. Simply and fashion in classic trend.Detail Information:Sound Channel: 2.1Sorts ...