We Yu-audio power amplifier maintenance monthly maintenance is not unusual, like Onkyo, Yamaha, Denon these are frequently, but frankly Marantz power amplifier also took much, took several Marantz AV amp as if it is the product of a decade ago, looked it up online now Marantz is selling models,vHhservice manual download site
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Basic two channels of pure power amplifiers, and the price is not cheap. Others Marantz is very smart, competing not with other brands in the AV amplifier, follow your own HIFI line. But I don't know how some of these amplifiers sold on the market is so expensive that too little, or loving bad quality is not much better, only rarely sent to repair the Marantz amplifier, Marantz CD-something most maintenance.vHhservice manual download site
Here are just a Marantz MA-9S2 super power amplifiervHhservice manual download site
Marantz combines S1 was released 4 years accumulation of technology and tradition, has finally released the latest speaker to play the potential of next-generation power amplifier MA-9S2. Marantz think amplifier resulting sound quality one of the reasons for the difference, is the lack of instantaneous current supply. Moments into the larger current in a loudspeaker, drive higher too will be able to drive to achieve better dynamics.vHhservice manual download site
This amplifier is not only achieved far exceed 100A 150A instantaneous current supply capacity of target and achieved positive and negative signals are sent in parallel, Mono-specific ground layout, use stereo BTL Mono amplifier cannot achieve the ideal layout.vHhservice manual download site
Function and characteristicsvHhservice manual download site
2-tier architecturevHhservice manual download site
Adopt 23dB part parts increase in voltage gain, 6dB power increase gain level 2 structures, so as to avoid speaker back EMF effects of spread to the highest sensitivity of primary.vHhservice manual download site
Full current feedback amplifiervHhservice manual download site
MA-9S1 the pursuit of stable operation of the amplifier circuit, and after entering the primary voltage amplifier with adjustable HDAM, V/I conversion, output buffer using HDAMSA. The MA-9S2 take full advantage of the 4 years of research and development of new technologies, the voltage amplifier for a comprehensive reform. This reality in all of HDAMSA current feedback amplifier on. Through this improvement, achieving a higher s/n ratio. Emphasis on instantaneous current supply capacity of current feedback type power amplifiers

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