Sony CDP-790 CD Player

A decent example of this good quality CD CD player from Sony. Small scratch on back, otherwise VGC.

A CD player with 8 x over-sampling 18-bit D/A conversion for high sound quality while equipped with rich functions.

The digital filter is an 8-times over-sampling 18-bit digital filter with Sony’s unique noise-shaping technology, and the D/A converter is an 18-bit linear D/A converter that takes advantage of the high-resolution 18-bit output of the digital filter to perform D/A conversion.

A direct digital sink is used to prevent phase disturbance caused by jitter.
In the CDP 790, a digital sync IC connected to the D/A converter readjusts the voltage time axis of the digital signal to the accuracy of the master clock, which is free from jitter, and sends it to the D/A converter, enabling more faithful D/A conversion with accurate phase.

The digital circuit is equipped with the next-generation LSI CXD-2500, the fourth generation.
In the CXD 2500, the RAM capacity has been increased to 32 kbit from the conventional external configuration. Moreover, it is integrated into a single chip. This enables digital data exchange inside the LSI, greatly reducing unnecessary radiation noise, reducing interference with audio circuits, and improving error correction capability.

A newly developed pickup with a built-in RF amplifier is used in the pickup section, enabling low-impedance signal output and improving sound quality through low-noise and high-stability.

The servo circuit is equipped with S Servo III.
The S Servo II prevents the disturbance of the servo current from adversely affecting the analog section through the power supply. Noise components that adversely affect the analog section are removed with a low-pass filter to supply a smooth servo current. In addition, the power supply from the weak power supply section is stabilized to reduce the influence on the audio circuit.

Aluminum panel is used for the front panel.