High efficiency and big power
        DN series using PWM(pulse width modulation) technology and modularize of the inside design The efficiency reach 95％，just 5％output changed to heat consumption.
Pratect circuitry 
        Short circuit protection：Avoid dangerous over-load and short clrcuit of earthing with the output terminal Reactive load driver：For the new switch technique is used，the amplifier can drive high reactive load，but it do nothing wrong to the equipment and power consumption .
        Clipping limiter: Avoid hard clipping of speaker and keep full power of peak value.
        Thermal protection:self-regulation temperature can be done,so that a limited tempetature can always be keep. Key patrs is use under invarialeness temperature increase, the poewer may decrease to the maintaining state.
        Long output power control:attenuator’s gain will protect the speaker if some strong durative signals(not music)happen.
        AC proection:if the power voltage overstep the working voltage range of amplifier, the output will cut automatically.
        DN series can so completely protection under possible error.
Good timbre
        Like traditional analogy amplifier，precision，lucidness likes crystal，massiness and plenitude，recurring of the sound environment.

Completely digital and high reliability
        PWM(pulse width modulation) technique is the basis use in ZOMAX DN series. PWM has been use in power supply and soacer for several yueas, which support hig reliability, small size, light weight and high efficiency. Like freuency sampler, PWM convertor can change different scope of signal to pulse list. The mean value is equal to output. ZOMAX not only hold a large number of technique in power switch and output filter but also catch the topping audio technique of the world.