The X-150.2 D is a 2-Channel Amplifier from Audio System with digital high-performance architecture and SMD technology. The features include a variable and switchable subsonic, HP, LP, and BP filters, as well as a PUMPER limiter. The efficiency is up to 86 percent. The power levels are 2 x 150 watts RMS at 4 ohms, 2 x 250 watts RMS at 2 o...