New products: SA series big power switching amplifier ( TD grade)   After years of research and development by engineers of CJK Audio, SA series big power switching amplifier came into the market in this year. It is one of the highest professional power amplifier. the main characteristic is stable high-performance, full power, cost-effective. The parameter is 2U, 2 x 1800w/8ohm, switching power supply with UC3851 rectangle switch transformer, power tube is MJL21195/21196. Please refer to the attached drawing for details.