Features: 1) Perfect protections are provided to every possible operating error in DA series, arranging from overheat, over-current, over-voltage, under-voltage, radio frequency, short circuit to voltage limit, which you can wholly depend on 2) As digitalization arrives, digital amplifier has become an irreversible trend that whoever owns faster, which would occupy more market share 3) TASSO will develop more types of digital amplifiers based on the present experiences to the consuming public