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Den fordybende videnskab ved lydudstyr, bragt til dig af {name}

Ariel Cabello

    • 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 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, 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 not often seen (rare).
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 on 220 volts. Normally it is 100 volts. 

Rare. See photos.  

  
   
Model rating
Type
CD player
Frequency response
2 Hz ~ 20 kHz + 0.2 -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 473x Height 132x 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   invoice    )
Will be well packaged for shipping . 
You don't often find items in such good condition . 
Photos are part of the description :  

    
 
    
 


Meget god - Antal artikler: 1 - Inklusive: Fjernbetjening, +Ekstra genstand (se beskrivelse), Renoveret

Yamaha - YAMAHA CDX 2020 CD-afspiller

Lydudstyr

Reservepris

Ingen mindstepris

Budget

Slutdato

søndag

torsdag

17 august

i morgen

18 august

onsdag

fredag

lørdag

21 august

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Reel to reel-lyd

Tuner

Walkman

Tom lydkassette

Rørradio

78 omdr./min. grammofonafspiller

Pladespiller sæt

Equalizer

Reel to reel spolebånd 18 cm

Hovedtelefon

Oprindelsesland

Norge

Europa

Materiale

Stål

Aluminium

Træ

zink

Jern

Støbejern

Tilstand

Fremragende

Meget god

Som ny

Forskellig stand

Glimrende (EX)

Meget god Plus (VG +)

God stand - brugt med små tegn på aldring

Rimelig og dårlig

Fremragende stand - næsten ikke brugt med minimalt tegn på aldring og slid

God stand - brugt med små tegn på aldring og mindre fejl

God stand

Ekstra tilbehør

Ingen ekstramaterialer

Netledning

+Ekstra genstand (se beskrivelse)

Fjernbetjening

Strømforsyning

Boks

Original brugsanvisning

Ingen kabler

Strømadapter

Renoveret

Brochurer

Kasse

Mikrofon Støddæmper

Rejsekasse

Periode

2000-2010

2010-2020

1990-2000

1980-1990

2020+

Stil

Samtidskunst

Skandinavisk design

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Moderne

Signatur

Ikke signeret

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Klassisk

Farve

Transparent

Sort

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Testet og fungerer

Testet og fungerer/kan afspilles

Ikke testet

Æra

1900-2000

Efter 2000

1400-1900

Skaber

Pier Giacomo Castiglioni

Achille Castiglioni

Richard Sapper

Marco Zanuso

Meget god - Antal artikler: 5 - Inklusive: Reel to reel-lyd - Boks

scotch - Reels Reel to reel-lyd

God - Antal artikler: 1 - Inklusive: Multieffekt processor - Ingen ekstramaterialer

Behringer - DSP 1000 Multieffekt processor

God - Antal artikler: 1 - Inklusive: Hovedtelefon - Ingen ekstramaterialer

Pioneer - SE-305 Hovedtelefon

God - Antal artikler: 3 - Inklusive: Subwoofer højttaler sæt - Ingen ekstramaterialer

Bose - Acoustimass® 5 Series II Subwoofer højttaler sæt

Som ny - Antal artikler: 1 - Inklusive: Boks, Kasse, Original brugsanvisning

Shure - N35X Patron og/eller nåle

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ELV - 2030 Oscilloskop

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Viwone - PURE Hovedtelefon

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Sony - NW-A916 Walkman

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Generic - NAB aluminium navadapter Lydkomponent

Meget god - Antal artikler: 1 - Inklusive: Ingen ekstramaterialer, Netledning

Pro-Ject - Pro-Ject Essential II Pladespiller sæt

Sony - MZ-E520 Bærbar minidisc-afspiller-optager

Lydudstyr

Denne genstand er ikke længere tilgængeligt, men der er stadig meget at udforske

Yamaha - YAMAHA CDX 2020 CD-afspiller

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