Cayin CDT-17A

[EastWest]

Moin,
For more info on this item you can contact me, since honesty in audiobusiness is the best way for long term relationships with potential clients. EastWest.

eigtl. wollte ich mir ja auch den CDT-17A im Austausch gegen den 15er ins Wohnzimmer stellen.

Mein Händler schrieb mir, nachdem er mir schon ein Angebot gemacht hat,
diese Mail. Da wird man natürlich vorsichtig:

Dear Jost,

I was adviced this evening to strongley suggest you not to buy the Cayin CDT
17A since QA tests this month has been not good for this CD player, 4 times
a defect transformer, so this means that there are serious problems with
this machine and till that time no Cayins. I am very sorry, but this is a
very reliable message from one of the best trading agents in the Chinese
audio industrie.

Ich versuche noch herauszufinden was genau an der Geschichte dran ist.

Gruß
Jost

[EastWest]

Moin,
For more info on this item you can contact me, since honesty in audiobusiness is the best way for long term relationships with potential clients. EastWest.

eigtl. wollte ich mir ja auch den CDT-17A im Austausch gegen den 15er ins Wohnzimmer stellen.

Mein Händler schrieb mir, nachdem er mir schon ein Angebot gemacht hat,
diese Mail. Da wird man natürlich vorsichtig:

Dear Jost,

I was adviced this evening to strongley suggest you not to buy the Cayin CDT
17A since QA tests this month has been not good for this CD player, 4 times
a defect transformer, so this means that there are serious problems with
this machine and till that time no Cayins. I am very sorry, but this is a
very reliable message from one of the best trading agents in the Chinese
audio industrie.

Ich versuche noch herauszufinden was genau an der Geschichte dran ist.

Gruß
Jost

[waterl00]

Hello Ron,

your quotation is a little bit misleading

Ron gave an ok to post the answer of his chinese agent here in the forum.
So here it is:

DEAR RON,

JUST GIVING YOU THE FIGURE FIRST. TALK WITH YOU ON MY NIGHT SHIFT HERE TONIGHT.

THE FAILURE IS DURING OUR QA TEST FOR EXPORT AND IT IS LESS THAN 10 SETS TO BE DONE ON QA EACH MONTH.

TO THE BEST I KNOW, CDT15A AND CDT17A HAS BEEN RECORDED WITH TRANSFORMER FAILURE AND DISC READING FAILURE CASED IN ITALY (3 CASES IN 2005). A-88T IS RELATIVELY VERY GOOD ONE AND SO FAR UP TO THIS MOMENT ONLY 1 CASE OF LAVA TUBE IN AUSTRIA REPORTED (OVER THE PAST 3 YEARS AND ZERO PROBLEM RATE IN OUR QA TESTS).

IN REALITY QUALITY CONTROL IN TUBE AMPLIFIER AND CD PLAYER REALM IS NOT THE SAME.

SO, BE CAREFUL RON, NOT TO LET OTHER CLIENTS THINK THAT YOU DO NOT WANT TO SELL CAYIN AND SELL ESOUND. IF THE CLIENT INTEND TO BUY, SELL THAT (THIS IS MY ADVICE AND EXPERIENCE). JUST WARN ABOUT THAT AND OUR RESPONSIBLITY IS GOOD ALREADY.

BEST, SEE YOU HOURS LATER.

From my point of view I don't see big problems with the Cayin CDT-17A after this statement.

Allthough I do not know how many Cayins are checked successfully in relation to those who are making trouble

With regards
Jost

[Amerigo]

I asked the moderation to look into this thread because I think it's never a good idea to publish personal e-mails in a public user board. Furthermore, one must be very careful with gossip.

cheers

Amerigo

[waterl00]

I asked the moderation to look into this thread because I think it's never a good idea to publish personal e-mails in a public user board. Furthermore, one must be very careful with gossip.

cheers

Amerigo

As already quoted I asked Ron to publish this statement here. He said that it was ok. So where is the problem?

Maybe some other users are interested in potential qualitity problems before buying a high priced product.

Of course this thread should not be abused to make some hidden advertisment for commercial users. Amerigo, I think that's your intention, isn't it?

Regards
Jost

[Amerigo]

Jost

Ah, you never know what commercial interests are behind people writing about possible quality issues. And I see we have a commercial user here. Coincidence?

Total BS here:
BTW: Nobody should buy Balanced Audio, they have a quality problem, just like Opera Audio and Shanling. The best would be to buy only Sheng Ya.

See my point?

Cheers

David

[waterl00]

I see your doubts, yes.

But why aren't you answering to Ron directly?

I have neither commercial interests here nor any relationships to any commercial users here. I am posting as a private person as you do (hopefully) here.

I only posted a statement of a chinese agent, which might be interesting for others.

And as already commented I don't see any issues on Cayin products with this statement allthough the agent's (or Ron's) intention was maybe another one

But I think we have to wait until the Mod is back in town here

[waterl00]

warum quasseln wir hier eigtl. noch englisch

[Amerigo]

To give others a chance to read and understand what we're talking about?

Nee egal. Weisst, das gibt's immer wieder, dass einer solche Gerüchte streut und da frage ich mich halt manchmal "wem nützt es?". Habe oft den Verdacht, da will einer lieber das Produkt verkaufen, an dem er mehr verdient.

Gruss

David

[florentino]

oder das was halt auf lager ist!!!!
weil man das angefragte produkt im jeweiligen moment nicht liefern kann
und vieleicht auch nicht beschaffen kann

darin liegt eher das problem

[waterl00]

und vieleicht auch nicht beschaffen kann

darin liegt eher das problem

naja, da möchte ich aber mal widersprechen.

Ein Händler, der chinesische Produkte anbietet, aber keinen Cayin besorgen kann, nee, das glaub ich nicht.

Ich bilde mir ein mehrere Chinesen zu kennen, die ihn in 3-5 Tagen an meine Haustür liefern könnten.

Letzlich spekulieren wir sowieso nur, was wohl die Intention des Verfassers sein könnte.

Es könnte natürlich auch einfach nur den Tatsachen entsprechen, daß ein paar Geräte bei der QA durchgefallen sind. Ich persönlich beurteile es sowieso erstmal positiv, das Cayin eine funktionierende Qualitätssicherung betreibt.

Ein Grund mehr für den Cayin
(Aber vielleicht war das ja auch die Intention, man weissed nisch )

[EastWest]

If this reaction of me caused any misunderstanding about my integrity as a dealer of Chinese audio products, then I am very sorry. It is not my intention to sell any other product then what clients are asking fore. It is neither a gossip story or what so ever. Ofcourse not all Brands are on stock, but what is most important that there is not hidden catch or misleading! I will draw back from this forum and this is my last contribution. Regards to all lovers of good quality products for affordable prices. Ron Wevers

[fst]

ähhhhm martin, hast du nicht in diesem thread schon geschrieben wie man den blauen ring dimmt? war das nicht das mit dem zweipoligem kabel in der mitte und den 392 ohm 1%? oder bin ich jetzt auf dem holzweg? wollte es eigentlich über den weg probieren.
ich meine du hättest doch auf mal geschrieben das das im prinzip auch mit der power led so geht nur die etwas verkniefter auf der platine sitzt oder so.
ist dem so oder bin ich jetzt völlig deppert???

[Amerigo]

Ron, please stay here but be very careful with sales relevant information you give. Especially you as a dealer should be very sensitive in this regard. Quality issues are killer criteria, and you have to be more careful unless you have validated information. If you do have real and validated information, we will all be glad to hear it!

Best regards

David

[waterl00]

Ron, please stay here but be very careful with sales relevant information you give. Especially you as a dealer should be very sensitive in this regard. Quality issues are killer criteria, and you have to be more careful unless you have validated information. If you do have real and validated information, we will all be glad to hear it!

Best regards

David

100% Agree in what David said!

[teiki arii]

Hello everyone,
Let me show you my new Cayin CDT-17A optimized by André Devillers, the magicien from Belgium. You'll see only the upper part of the PCB. There are not less on the other part of the PCB. Optimisation by André has some secrets of course, but with high grade components...

CAYIN CDT-17A OPTIMISED BY ANDRÉ DEVILLERS:


PCB/ SCHEMA PCM1792:
[img:1280:850]http://img141.echo.cx/img141/7382/opacdt17a9jj.jpg[/img]
[img:800:531]http://img138.imageshack.us/img138/4653/dsc2991a5qv.jpg[/img]
[img:800:533]http://img459.imageshack.us/img459/934/ ... oad5tu.jpg[/img]

REPLACEMENT
OF WIMA 2uF 250VDC CAPACITORS BY MUNDORF 3,3uF 1200VDC SILVER/OIL
VALVES 6922EH BY SIEMENS CCa:
[img:800:531]http://img459.imageshack.us/img459/6189/dsc2969a9ag.jpg[/img]
[img:800:531]http://img459.imageshack.us/img459/4685/dsc2976a3qh.jpg[/img]
[img:800:532]http://img138.imageshack.us/img138/295/mundorf23rb.jpg[/img]
[img:533:800]http://img459.imageshack.us/img459/402/ ... cca1ck.jpg[/img]

DETAILS OF POWER AND SCHEMA PCM1792:
[img:800:531]http://img138.imageshack.us/img138/804/ ... 6001wc.jpg[/img]
[img:800:531]http://img459.imageshack.us/img459/855/dsc2973a9dc.jpg[/img]
[img:800:531]http://img459.imageshack.us/img459/3799/dsc2982a8aw.jpg[/img]

VERY DETAILS OF PCB/SCHEMA PCM1792:
Conversion I/V stage (exchanging AD827 for NE5532, BRIDGED NOS SILVER MICAS):
[img:800:533]http://img138.imageshack.us/img138/4402 ... oad0kb.jpg[/img]
[img:533:800]http://img138.imageshack.us/img138/1434 ... ad23xs.jpg[/img]

Filtration stage (exchanging OPA604AP for OPA627BP, BRIDGED NOS SILVER MICAS):
[img:800:533]http://img459.imageshack.us/img459/3831 ... poad2w.jpg[/img]
[img:800:533]http://img459.imageshack.us/img459/7677 ... poad21.jpg[/img]

Asymétrisation Single-Ended stage (exchanging OPA604AP for OPA627BP, BRIDGED NOS SILVER MICAS):
[img:800:533]http://img459.imageshack.us/img459/7393 ... oad4uy.jpg[/img]
[img:533:800]http://img459.imageshack.us/img459/2205 ... ad24oc.jpg[/img]

[Thargor]

Hi!

Interesting Modification! There are some resistors at the silver micas. Can you explain that to me?

Regards Thargor.

[teiki arii]

Hi!
Interesting Modification! There are some resistors at the silver micas. Can you explain that to me?
Regards Thargor.

Hello Thargor,
I asked André the meaning of the optimization, but that is one of his secret...Sorry.

What I can say about the "regulation stage" is that André made a CRC Filtration: Capa/Resitor/Capa...André doesn't like regulators..
best regards.
[img:800:531]http://img459.imageshack.us/img459/855/dsc2973a9dc.jpg[/img]

[mangusta]

Hallo 17A´ler

ich habe am Samstag in meinem Cayin die serienmäßig verbauten OPA´s gegen Burr Brown OPA 551 PA getauscht.

[IMG:360:270]http://img162.imageshack.us/img162/8743 ... 1pa4xr.jpg[/img]

Bisher habe ich den OPA-Tausch auf die 627 immer etwas vernachlässigt, da ich keine günstigen gefunden habe und daher auch nachher nicht mehr intensiv danach geschaut habe.

Jetzt habe ich kürzlich den Tipp mit den 551 bekommen und da der Preis der 551 gerade mal zwischen 4 und 5 Euro liegt (je nach Abnahmemenge) habe ich zum Antesten mal zugeschlagen.

Ich habe alle sechs getauscht.
Mein erster Eindruck war eine Zunahme der Präsenz und der Räumlichkeit des Mittel-Hochton-Bereiches.
Ich habe dann drei CDs mal durchgehört und danach wieder auf die 604 gewechselt. Bei den selben CDs bestätigte sich mein Eindruck. Zurück auf die alten OP´s kam mir der Klang nun etwas "verhangen" und minimal "dumpfer" vor.
Also habe ich mir drei seht gut bekannte Stücke nochmal genau angehört und mir diese dann, nachdem ich wieder auf die 551 gewechselt habe, nochmal angehört.
Erstes Fazit: In der Tat scheinen die 551 dem Cayin mehr Zugewinn im MHT-Bereich zu geben. Die Musik kommt etwas lockerer, klarer und räumlicher daher.

Ich werde die 551er jetzt mal zwei, drei Wochen einbrennen lassen und dann nochmal einen Vergleich starten, um zu sehen, wie sich meine Eindrücke bestätigen oder was davon erhalten bleibt.

Ich werde natürlich berichten.

Hat hier sonst jemand schon mal die 551 PA probiert?
Mich würde interessieren in wie weit die Eindrücke sich decken.

Grüße
Marcell

[teiki arii]

Very interesting review...
I changed the 4 x OPA604/OPA627 at the differential section for 4 x discret components OPA...
Some photos soon, by the tenth of June after the listening at Troyes, France.