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Aune T1 USB Tube DAC+Amp Discussion Thread ***See first post for FAQ*** - Page 117

post #1741 of 5954
Ah well. One of the occasions where, "Too good to be true" is really too good. Hope you get your money back. smily_headphones1.gif Noticed that the guy you informed about his pricing lowered it, thinking about it now? wink.gif Hehe
post #1742 of 5954
Quote:
Originally Posted by audiofrog View Post

I can hear a lot of people saying "told you so!" - here's the message I got about the aune T1 from Starslove

 

We're writing to let you know that this listing for an item you won or bid on is no longer available:

130889822865 - Aune T1 DAC Hi-Fi Pre-amp Audio Amp 24Bit 96KHz 6N11 Tube Headphone Amplifier

We understand this may be disappointing, but occasionally we need to remove listings. In some cases, the item itself is fine, but was listed in a way that didn't follow eBay's guidelines.

I received the same message as well and decided to put in an ebay case for item not received.  Hopefully we can get a refund.

post #1743 of 5954

My refund came through today after less than 24 hours.. good on ebay/paypal

post #1744 of 5954
Quote:
Originally Posted by uncola View Post

My refund came through today after less than 24 hours.. good on ebay/paypal


Wow, thumbs up on ebay's customer support!  I still haven't received my refund yet, placed in the complaint about 2 days ago (hoping it goes through with no problems, 135 dollars at stake here since I also took a bite on the GTX480 vidcard as well).

post #1745 of 5954

Can some tell me if the T1 works with the MacBook/HD650. I want to use the tube amp and Dac, I don't get the Tube Dac and USB connections problem.

Thanks

post #1746 of 5954
Quote:
Originally Posted by McKajVah View Post

 

All of my 10 tubes has the same size of the 0-ring getter. None of them has any number on the glass bottom.

 

All of my 6 SQ tubes have the same vertical markings: 40811. There is also som smaller horizontal marking: DJF V3H.

I have one which looks very similar to the SQ, but has white lettering and is marked vertical 11312, and horizontal DJL and a symbol "half circle with a dot inside" followed by the number 1.

The 3 that just says "PCC189" are without that extra plate under the o-ring getter and is marked vertical:11801 with no small horizontal markings.

 

When you ask for "metal vertical center plate", what plate do you mean?

 

BTW: I have only listened to the SQ tube, but they definitely fit really well with my Grado SR325 bringing down the treble.

 

-Kaj

What I mean about metal vertical plate (A) and grey vertical (B) plate:

A: https://www.tubeworld.com/6dj875p2.jpg
B: http://a248.e.akamai.net/origin-cdn.volusion.com/gm5yp.bd2vt/v/vspfiles/photos/Valvo-PCC189-3.jpg

 

Look at the center inner tube, in middle there`s a vertical plate that goes down to pins and kinda "splits the tube".

 

Your SQ- s should be same sounding as mine. That 11312 DJL with dot marking seems interesting. 

post #1747 of 5954
Quote:
Originally Posted by McKajVah View Post

There is also som smaller horizontal marking: DJF V3H. I have one which looks very similar to the SQ, but has white lettering and is marked vertical 11312, and horizontal DJL and a symbol "half circle with a dot inside" followed by the number 1.

 

In addition to the normal prints, tubes usually have one or two letter/number/symbol codes etched to the glass which can be used to interpret when and where the tube was manufactured. I, for example, have three different Amperex dimple disc A-frame orange globes. One of these globes have no factory codes visible, but it has tektronix label, which in my understanding means that the tube has "passed intense quality screening for critical applications in Tektronix industrial equipment". The other two tubes have the following codes:

 

GAE

Δ2K4

 

and

 

GA8

Δ0F3

 

GA means that the tube is 6DJ8 tube and the last letter or number indicates which batch it is from (also helps estimate the production year range). The other line tells you more about the actual production. The first symbol tells you the plant/factory the tube was made in. In this case the lower right triangle symbol means that the tube was manufactured in Philips, Heerlen, Holland factory. 2K4 is the date code where 2 = last digit of year, 1972; K = month, Nov (A = Jan, etc.); 4 = week of month. So it seems that the GAE and GA8 are 6DJ8 tube types from different batches. The 2K4 is 1972 production and the 0F3 is 1970 production.

 

The codes in your Ultron seem to indicate that they both are same tube type (DJ = 7ES8/PCC189 even though in some cases DJ equals 7DJ8 tube type) and come from different batch. The half circle with dot inside indicates that the tube was manufactured in Elektroninski Industija, Nis, former Yugoslavia. Not sure about the number but it probably means year (19X1, 1971?). The V3H code could mean (I assume that the first letter is indeed capital V) that the tube was manufactured in Bharat Electronics, India (August 19X3, 1973?). Anyways it seems evident that the tubes were manufactured in different plants. Later Ultron has bought these tubes and relabeled them in their company. Seems like you have to be careful with these Ultron tubes. There could be lots of different tubes labeled as Ultron varying from German and Dutch tubes to Asian tubes. This obviously affects the sound as well.

 

Photos and sources:

 

 

 

 

http://www.audiotubes.com/mullcode.htm

http://www.tube-classics.de/TC/Tubes/Valvo/Phlipscode.htm

http://www.triodeel.com/images/philipstubecodes.pdf

http://www.pauls-roehren.de/downloads/PhilipsCodeListAB.pdf (this one seems to be really good source)


Edited by Salvatore - 6/10/13 at 1:12am
post #1748 of 5954

My 2 golden label Ultron SQ tubes also have 40811 vertical code and factory code is DJF V3B. Seems they are also made in India by Bharat Electronics.

 

Salvatore, but where do you get that other (white label) Ultrons are from Germany or Dutch? They have no factory codes. I`m assuming they are also probably from Asia region or former Yugoslavia or Hungary.
 

Anyway, despite the white and gold label seem to be from different factory, they sound almost identical, at least my golden and white (50402, PCC189 7ES8, with grey center plate and large O-ring getter).


Edited by CoiL - 4/30/13 at 5:18pm
post #1749 of 5954
Quote:
Originally Posted by GaryPham View Post


Wow, thumbs up on ebay's customer support!  I still haven't received my refund yet, placed in the complaint about 2 days ago (hoping it goes through with no problems, 135 dollars at stake here since I also took a bite on the GTX480 vidcard as well).

 

Just got my refund as well.  Yay for ebay/paypal support!

post #1750 of 5954
Quote:
Originally Posted by GaryPham View Post


Wow, thumbs up on ebay's customer support!  I still haven't received my refund yet, placed in the complaint about 2 days ago (hoping it goes through with no problems, 135 dollars at stake here since I also took a bite on the GTX480 vidcard as well).

 

I just received my refund on the T1 from paypal.

 

What a scumbag scammer this guy is. His account: starslove is now apparently (private) and Not a registered user anymore. Why does ebay even allow this? So that means we can't even leave him negative feedback and no one can view his feedback information either. It's just a waste of time.

 

I was able to get his information (not sure if it's fake or real since I can't read Chinese) before he closed his account.

 

 
User ID:
starslove
Name:
双星 彭
Company:  
City:
荆州市
State:
湖北省
Country:
中國
Phone:
13872309783
Registered Since:
2012-05-16 16小時30分15秒

 

 

I don't know what we can do, but something needs to be done to prevent this guy from scamming people again.


Edited by cheuh - 4/30/13 at 2:17pm
post #1751 of 5954
Quote:
Originally Posted by CoiL View Post

Salvatore, but where do you get that other (white label) Ultrons are from Germany or Dutch? They have no factory codes. I`m assuming they are also probably from Asia region or former Yugoslavia or Hungary.

 

This is just assumption I got from browsing some old forums and sites. And I mean Ultron tubes in general.

 

http://www.audiotubes.com/6dj8.htm

 

" 6DJ8 Ultron or RSD, made in Germany, New Old Stock White Box. White label, 1970s vintage, nice German made tube, very similar to Siemens."

 

 

https://www.tubeworld.com/european.htm

 

Ultron Germany NOS original Ultron boxes

 

 

http://www.diyaudio.com/forums/tubes-valves/110406-ultron-6v6gt.html

 

"Ultron was a German vendor, with a good reputation in its selections. I have several 6SN7s & 6SL7s branded by them and they are all best American crop. The ones in your picture, may well be G.E. Ultron was relabeling lots of Siemens & Valvo that they got 6V6s mainly from G.E."

 

 

http://www.vintageamps.com/plexiboard/viewtopic.php?f=13&t=27811

 

"They are German, thats all i can say"

 

 

Everywhere I browse I get these kind of comments.

 

Quite a many place say that Ultron was West Germany company. Their original boxes are also printed in Germany. If this is indeed the case it would be very convenient that the early Ultron tubes were relabeled German tubes.

post #1752 of 5954

Thanks for information! 

 

edit: Still, we can`t claim that white PCC189 ultrons are german or dutch because boxes are printed in west germany (my india SQ ultrons have also box printed in W.Germany) and other ultron tube types are belived to be german/dutch or are german/dutch. 6DJ8, 6SN7, 6SL7 and 6V6 are not same type as PCC189/7ES8 and can`t be said that come from same importing source. As far as I know Ultron was only importing tubes and marking them with their own logos. One seems to be sure - golden label SQ ultrons come from india or asia region (info about Bharat Electronics BEL: http://en.wikipedia.org/wiki/Bharat_Electronics ). I belive that whole ultron PCC189 type seems to be selected "same sounding". I wish I had another white logo ultron with metal vertical plate to confirm this.


Edited by CoiL - 5/1/13 at 9:43am
post #1753 of 5954
my telefunken pcc189 came in. can't wait to roll them at work. biggrin.gif
post #1754 of 5954
Does anyone use this dac with grados? Wondering if they pair up well
post #1755 of 5954
I want to buy Ultron PCC189 from here: https://www.astelectronica.nl/AstCatalog/Detail.php?Article=495288&name=PCC189&SiteLanguage=NL

just the be sure, this is the right tube, right?
Edited by Kamiru - 5/1/13 at 11:32am
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