Every (as a digital analog converter, they are four pieces) two 1-bit dual digital-analog-converter DAC7 (TDA1547) per channel are used,The D-A conversion of a DSD (direct stream digital) signal with the sampling frequency which reaches by 64 times the compact disk is realized.
At the time of compact-disk play, oversampling digital filter DF7 (TDA1307) is used 8 times, the music signal of compact disk with a sampling frequency of 44.1kHz is changed into a bit stream data, and it is delivering to the digital-analog-converter part of 4 tap stream compositions. Dual HDAM which carried out the twin back of a Marantz and the original high-end device HDAM (high-speed voltage amplification module) is adopted as an audio circuitry. Ideal high slew rate / low impedance are attained by considering HDAM which realized the performance stabilized according to the high shielding structure of suppressing the influence of heat, or an oscillation and electromagnetic waves even on the minimum level as a twin puck.