... channel and four channels, each channel, s rated power have options of 120W, 240W, 350W & 500W.19, , Standard rack mount design in ... 2U height.The VA series classD power amplifiers are designed of switch power technology for power electricity saving, separate PFC design ... by one, two and four channels* 19, , rack mount design of 2U height* Switch power technology for less power consumption but ...