Professional amplifier features dual mono balanced input structure. Variety of input methods stereo, bridge, parallel. H class of highly efficient power amplified circuit, built-in automatic temperature controlled fan cooling system. HF sound quality, perfect audio quality reduction, allowing actors to play vividly. Switch on automatic soft-start and built-in intelligent pressure limit system. A variety of output modes, stereo, bridge. Detection of multiple intelligent protection system. Built-in 100Hz high-pass filter.