Full-digital signal amplifying circuit
The R-K731 features the latest digital technology to convert and amplify the music signal more accurately.
In order to eliminate “voice data conversion loss” and the “influence of external noise”
that occur in existing circuit architecture, the R-K731 features a “full digital amp”
to perform all signal processing digitally from the signal input to the final step in the amp.
In addition, the “Lch amp” and the “Rch amp” each have independent architecture.
When combining these with power-supply circuits that have also been made independent,
it enables accurate signal amplification with excellent channel separation and reproduction of sound faithful to the original audio.
Independent power-supply circuit
The power-supply circuit supports accurate signal conversion and features independent architecture for the
“digital circuit,” the “CD mechanism,” the “analog circuit,” and for the “amp.”
This suppresses interference from the power of the mechanism parts and improves playback of weak signals.
In addition, power is supplied independently to the Lch and Rch amps,
and the right and left amps have independent digital amp architecture.
Rectified power provides an even more stabilized power supply,
thereby removing ripple noise and realizing stable operational amplification.
Large-scale EI core transformer helps create stable power supply
The power supply features a large EI core transformer to support sound quality.
In order to suppress interference from the operating current between each circuit,
each part is supplied power separated by windings to support the basic sound. In addition,
the sound quality has the high-quality bass reproduction expected of an analog transformer.