마란츠 인티앰프 PM-54

　
The Integrated Amplifier which was developed by the basis of the thought corresponding to digital one with PM-64, and realized AVSS loading and a low impedance correspondence. 

AVSS (auto voltage shift supply) which shifts output supply voltage according to power is carried, and high power-ization is realized by driving a power element with the output supply voltage which was most suitable for each power from the Koide power to the maximum output, maintaining a quality. 

The design corresponding to a low impedance is carried out, and power is maintained even if it changes a speaker impedance to a very low value momentarily. 

In quest of a high SN ratio and high speed signal transmission, the direct switchpoint is carried from that of the digital source. 

In addition to man-month input, MC input is also carried in playback of an analog disk.