2U cabinet structure, it adopted switch power design, light weight body, strong voice interpretation power ,strong carrying capacity, excellent seismic performance design for conference engineering, two input ways with unbalance and balance, stereo sound, single channel, bridging three different working model, it adopted relay timing delay circle, soft log opening, and protect the guiding influence of the speaker, all the model with reliable time delay ,overload, over-temperature，the zero drift of multiple protection, fully automatic protect the circle including DC(direct current),over-current, overvoltage, overheating and dynamic automatic amplitude protection, it make sure the stable ,high effective working of amplifier
