I have researched most of vintage portable cd players made by Sony, Panasonic, Philips, Denon, Aiwa, Citizen, Toshiba and Kenwood.
I will replay any technical question about the following models:
Sony: D50 D50MKII D55T D100 D150 D250 D350 D303 D555 D99 D90 D3 D2 D2T D66 D34 D33 D121
Panasonic: SL-XP7 XP5 XP3 S505 S900 S700 S470 S490
Philips: CD10 AZ6808 AZ6819 AZ6826 AZ6804 AZ6805
Denon: DCP50 DCP150
Aiwa: XP50 XP66 XP77 XP6 XP7
Citizen: CBM1000 CMD3000
Toshiba: XR-P20 P21 P22
Kenwood: DPC-80 92 R7 7 77 92
 
Welcome any technical question!

Nobody got question?

All vintage portable cd players, UP! UP!

Quote:

kaosun said:

I have researched most of vintage portable cd players made by Sony, Panasonic, Philips, Denon, Aiwa, Citizen, Toshiba and Kenwood.
I will replay any technical question about the following models:
Sony: D50 D50MKII D55T D100 D150 D250 D350 D303 D555 D99 D90 D3 D2 D2T D66 D34 D33 D121
Panasonic: SL-XP7 XP5 XP3 S505 S900 S700 S470 S490
Philips: CD10 AZ6808 AZ6819 AZ6826 AZ6804 AZ6805
Denon: DCP50 DCP150
Aiwa: XP50 XP66 XP77 XP6 XP7
Citizen: CBM1000 CMD3000
Toshiba: XR-P20 P21 P22
Kenwood: DPC-80 92 R7 7 77 92
 
Welcome any technical question!

Click to expand...

Hey thanks, please tell me about philips cd10. Which D/A it has? What about saund quality, In which category would you out it in your list. Thanks
 

PHILIPS CD10 uses SONY CX23035 as DSP,CX20133 as DAC, main CPU is TOSHIBA TMP47 series, use TL1451 as ±5.2v main power supply.
Almost every thing about audio part is same with the SONY D50, only except optical head uses classic CDM-2P which is a single laser beam head,uses TDA5708 and TDA5709 as RF AMP and server, however D50 uses KSS110 as optical head, CX20109 as RF AMP,CX20108 as SERVER.
 
These two players share the same sound quality, mainly estimate is a little rough in the all frequency, not as so smoothly as others players with PCM55 as their DAC.
 
The common players with PCM55 are:
Technics sl-xp7
Philips cd10mkii
Sony D100 D50mkii
 
If you can find CD10MKII, it's a excellent player. However,CD10 is a exactly player worthy of hearing.
But, when considering repair, D100 will be a easy player.
 
I'll post another article to make a mainly components list of the common vintage cd players.

A couple a days ago I got my hands on a Philips AZ 6804. I have never heard about that PCDP. On the common search engines I´m getting no further informations, only the manual. No test, no reviews, no nothing.
I will be glad to anything known about that player. It´s nicely designed with a metal body skin like the AZ 6808. I have to compare it to the outstanding sound maschines like the Sony D-211, D-311 and D-515 during the next days.

If your 6804 can work smoothly, its sound can defeat all SONY models you mentioned, especially when you tuen on the DBB.
But according to its structure, it's easy for it to make a little background noise, like the noise relates to the spindle disc motor
can be heard from earphones.
Anyway 6804 is a excellent PCDP although it has an undurable optical head.
 

Looks like I found a good one!
Is there any vintage Sony you would recommend, especially to the headphone-out and durability.
I think I have all of them.

Philips az 6892 is not on your list but do you happen to know anything about it ? I could not find any data on this player on internet. Philips az 6819 should be close soundwise to az 6808 and az 6829 considering  their components.  What is your view on the sound of az 6819, viewed as one of the top philips portables  compared to top sonys - d 25, d 211, d 35, d 303, d 515 ? I am thinking of buying one of these top philips machines but i am bit apprehensive because of the lack of spare parts. Do you happen to know if and where it is possible to get spare parts ? Philips (Company) is of no help in this. And the last question, do you have any knowledge on modifying / upgrading sony d 25, d 202, d 211,d 35, d 303, d 515, d 465, d e905 ?

Personnally, I recommend :
D10>D555>D15>D25>D303>350
I mean only consider of sound qualify and I only talk about the models made before D777.
I almost have all top models of all prevailing brands, here I just talk about Sony.
Considering structure and repair, these models can be repaired relatively easier.
The former four models use SONY KSS220 optical heads, the latter models use SANYO SF89 heads.
If people do need repair them, I can help.

I have seen and appreciated many PCDP include PHILIPS.
 
I think I have heared the sound from 6892, the quality should be same with 6804 6805, their earphone amp should be MITSUBISHI M51568; however, carries a DAC upd6376.
The AZ6808/6819/6829 have almost same electronic circle, so do the sound. Their sound can be regarded as grand and wide.
 
I donnot think these models possess a top refined sound quality because their DAC are built in the DSP SAA7341 (digital signal processor); however, they win the game for their multi-function EQ, and the superoir DBB. If I connect an amplifier, I'll choose SONY D100 because it has a better line out quality, if I connect an earphones, I'll choose 68XX without question.
 
I never modify or upgrade any PCDP because I just want to listen the sound from that era. On the other hand, sound estimate is so subjective that modified PCDP cannot satisfy everyone.
Therefore I believe it's better to maintain the PCDPs in a factory status.
 
The service parts are sure hard to find.
Fortunately, I've possessed all techniques needed for maintaining and repairing the AZ6808/19/29.
If you have any question, just ask.
 
 

d35 is the most handsome PCDP you mentioned. I've thought about how to modify it, although I always lack time to do it.

顾老师你好!  Do you do repair in USA?  Can I send you a D303 to repair? 

I´m surprised that you consider the D-250 to be a good device. This one was always considered to be much worser than most of it´s contemporary ones.
The D-99 (16bit) for example was the reference PCDP in the German magazine "stereoplay", beeing even better than the D-Z555, up to the time the Apple photo cd player as a PCDP was released.
You can stil get the D-99 in volumes for little money. This one is totally underrated compared to the D-555, because it was not as expensive and does not have all the features you do not need to hear good music. Anyway, the D-555 only makes it when you turn off all options.

Sorry, D-99 was the first with 1bit-DAC like the later D-303. The earlier D-90 has a 16bit-DAC.