Sinbosen Class D digital power amplifier is developed by the our engineers. You will find the Class D amplifier are cost-effective, stable, and fully protected amplifiers. K series digital power amplifier including K-800, K-1000 and K-1200. They are popular among users at home and abroad because of their environmental protection, energy saving, small size and utilization rate of more than 97%. Products are sold in Europe, America and other countries.