Yamaha - YAMAHA CDX 2020 CD player

YAMAHA CDX-2020

¥182,000 (around 1989)
Comments
A CD player equipped with a 4 DAC high-bit system.

It utilizes Yamaha's high-bit system and achieves natural sound quality by obtaining smoother DAC output through highly accurate digital arithmetic processing that goes beyond the standard CD format.
Furthermore, the application of a high-bit system enables pure direct DAC playback without passing through a low-pass filter, which was considered essential in the past.

The digital filter uses an 8fsx20-bit digital filter to shift the sampling noise to a higher range and obtain high-resolution output.
The high-bit digital filter achieves an in-band ripple of ±0.0001 dB and an out-of-band noise of less than -100 dB thanks to the high-bit digital filter's extremely accurate digital calculation capacity of 225 order + 41 order + 21 order and the characteristics of the digital filter itself. At a resolution of 16 bits, noise-free and ripple-free digital performance is achieved.

The D/A conversion section has two 22-bit DACs per channel. By mounting two 22-bit DACs per channel, positive phase and negative phase signals are used to prevent noise contamination from the power supply circuit, achieving a high S/N ratio.
In addition to improving resolution, the 22-bit processing type also functions as a kind of noise reduction circuit.



The digital filter uses an 8fsx20-bit digital filter to shift the sampling noise to a higher range and obtain high-resolution output.
The high-bit digital filter achieves an in-band ripple of ±0.0001 dB and out-of-band noise of less than -100 dB thanks to its extremely accurate digital calculation capacity of 225 order + 41 order + 21 order, as well as the characteristics of the digital filter itself. At a resolution of 16 bits, noise-free and ripple-free digital performance is achieved.

The D/A conversion section has two 22-bit DACs per channel. By mounting two 22-bit DACs per channel, positive phase and negative phase signals are used to prevent noise contamination from the power supply circuit, achieving a high S/N ratio.
In addition to enhancing resolution, the 22-bit processing type also functions as a kind of noise reduction circuit, significantly improving the S/N ratio at very low levels.

The power supply consists of a large configuration with two transformers, and the power supply to the digital/servo system and audio system is independent, eliminating mutual interference.
In addition, the DAC and audio sections each use a shunt regulator system with A-class operation, achieving a low-noise, low-impedance power supply.


Pin-point support GP legs are used for the legs to exclude external vibrations.

Equipped with a newly developed digital emphasis circuit, high performance of 0.001 dB has been achieved.

A digital step volume of 0.2 dB is applied.

Wireless remote control is included.
This Yamaha CDX type 2020 is rare and not often seen.
It is 100 percent in good working order.
Can be tested here. Comes complete with remote control, see photos.
Small damage on top of the CD player, see photo above.
Photo (6)
This Yamaha CDX operates at 220 volts. It normally runs on 100 volts.

Rare. See photos.



Model rating
Type
CD player
Frequency response
2 Hz to approximately 20 kHz, with a variation of +0.2 to -0.1 dB.
Harmonic distortion factor
0.003% or less (EIAJ)
Signal-to-noise ratio
120 dB or more (EIAJ)
Dynamic range
100 dB or more (EIAJ)
Channel separation
100 dB or more (EIAJ)
Wow and flutter
Below measurement limit
Output voltage
2Vrms
Headphone output
280 mV ± 20 mV
Power supply
220 V AC, 50 Hz/60 Hz
Power consumption
20
External dimensions
Width 473 x Height 132 x Depth 392 mm
Weight
15.8 kg
Accessories
Wireless remote control

Works properly. See photos 6 for damage to the top edge.
Perfect for the Reest. (Photos) (Very rare in good condition, has been serviced, see photos and invoice).
Will be well packaged for shipping.
You don't often find items in such good condition.
Photos are part of the description.