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Little Dot Tube Amps: Vacuum Tube Rolling Guide - Page 270

post #4036 of 10503

Is $50.00 a pair a decent price for these amperex orange globe 6dj8 made in Great Britain. Test between 130/140

Made at Mullard Blackburn factory

 

CREATOR: gd-jpeg v1.0 (using IJG JPEG v80), quality = 95


Edited by MIKELAP - 11/19/13 at 5:11am
post #4037 of 10503
Quote:
Originally Posted by MIKELAP View Post
 

Is $50.00 a pair a decent price for these amperex orange globe 6dj8 made in Great Britain. Test between 130/140

Made at Mullard Blackburn factory

 

It's not a bad deal in itself, but the OG you really want are the ones made in Holland. The Mullard Great Britain ones, while good, neiter have the same tone (warmer) or absolute sound quality. Besides, I think you can get Mullard 6DJ8 or ECC88 cheaper.

post #4038 of 10503
Quote:
Originally Posted by gibosi View Post
 

After reading AFB's observations regarding the sonic differences between his 1962 and 1964 production tubes, I am very curious to discover if my 1961 tube sounds any different....

 

 

Yes, this 1961 US-Amperex 6922 does sound different. As AFB noted regarding his 1962 tube, it adds just a bit more warmth and body to the mid range compared to the 1964 US-Amperex 6922, which is a bit leaner and drier. And for sure, this warmer and richer presentation, with ultra detail and a holographic 3-D stage is GREAT!  Considering the 6DJ8-type tubes I have on hand, this tube is my current number one, with the 1978 Voskhod 6N23P, the 1967 OG and 1964 US-Amperex 6922 rounding out the best of the best.

 

But of course, this is not the last word as I have a few more little bottles of heaven coming my way... albeit ever soooo slowly.... lol

 

A physical feature on these US-Amperex 6822 tubes that I noticed yesterday: The sandblasted number 108. This appears to be the date of manufacture - 1961 Week 08, and it precisely correlates with the etched Philip's tube code number, *1B = 1961, February. The red-printed 61-46 is likely the date this tube was silk screened and packaged. I see comparable sandblasted numbers on my two 1964 tubes as well.

post #4039 of 10503
Quote:
Originally Posted by gibosi View Post
 

You know.... it's getting harder and harder to figure out which tube I like best! lol But what a wonderful problem to have.... :)

It really is starting to be problem to sort out ranking for owned tubes. Russian "RADIO lampa" 6N9S have even got better with some more hours of usage and difference to 6SU7GTY have become narrower. 6N9S bass is still little boomier than others.

 

6SU7GTY really does have a good sound. But i think it tries to be little too pleasing. There could be some cautiousness in sound and therefore it is not anymore my favorite tube to listen.

 

I got those 3 different KEN-RAD 6SL7GT's. Shiny and matt silver plated ones sounded good, but just like "normal" ones. But then there was this charcoal plated Y4 (nov 1944?) date coded JAN CKR 6SL7GT VT-229 and code SC961A? Now this tube does have balls in sound. And what little i understand about terminology, then this tube really have 3D sound with airiness, clarity and micro details that i have dreamed of.

 

I have not ordered any driver tubes after i won auction of ken-rads and not planning to buy any driver tubes for long time. (we'll see how long time i can be to not buy more of them) There is 4 pairs of very good power tubes coming from California, hope i get them in 2 weeks.

post #4040 of 10503
Quote:
Originally Posted by gibosi View Post
 

 

Yes, this 1961 US-Amperex 6922 does sound different. As AFB noted regarding his 1962 tube, it adds just a bit more warmth and body to the mid range compared to the 1964 US-Amperex 6922, which is a bit leaner and drier. And for sure, this warmer and richer presentation, with ultra detail and a holographic 3-D stage is GREAT!  Considering the 6DJ8-type tubes I have on hand, this tube is my current number one, with the 1978 Voskhod 6N23P, the 1967 OG and 1964 US-Amperex 6922 rounding out the best of the best.

 

But of course, this is not the last word as I have a few more little bottles of heaven coming my way... albeit ever soooo slowly.... lol

 

A physical feature on these US-Amperex 6822 tubes that I noticed yesterday: The sandblasted number 108. This appears to be the date of manufacture - 1961 Week 08, and it precisely correlates with the etched Philip's tube code number, *1B = 1961, February. The red-printed 61-46 is likely the date this tube was silk screened and packaged. I see comparable sandblasted numbers on my two 1964 tubes as well.

 

Absolutely fascinating!

 

And there I was expecting you to just invalidate my theory with some lukewarm "well... the '61s sound great, but the 64's are also excellent..." lol.

 

Again, what I find interesting is the similarity between the comments on Joe's tube lore and my impressions of both those tubes. The '62s, in my case, I would describe the exact same way "Joe" describes a Amp'ex US white label PQ 6922, while the '64 USN-CEP tube I would describe the same way he talks about a Amp'ex USN 6922... Go figure...

 

Still, I find that the expected minute difference actually makes a hell of difference during listening. While the '64 was great, realistic and detailed, I quickly felt the need to switch back to the OG, despite it being ever so slightly less detailed. There was no such pattern with the '62 tube. I've been running it since I put it on my amplifier. Color me surprised...

 

All in all, how would you rate the '61 US 6922 Amperex compared to the best 6SL7 offering - that Tung Sol tube? Having gotten close to the top on the 6DJ8 family (below $200 a tube at any rate), I'm curious as to what else the world has to offer (though I have 10000 hours of listening pleasure ahead of me with the '62 Amp'ex if I wish lol).

post #4041 of 10503

Hi Artsi,

 

Does your favorite tube look like this one?

 

 

hpim3608.jpg

hpim3607.jpg 

 

hpim2581.jpg


Edited by mordy - 11/19/13 at 3:26pm
post #4042 of 10503
Quote:
Originally Posted by Audiofanboy View Post
 

 

Again, what I find interesting is the similarity between the comments on Joe's tube lore and my impressions of both those tubes. The '62s, in my case, I would describe the exact same way "Joe" describes a Amp'ex US white label PQ 6922, while the '64 USN-CEP tube I would describe the same way he talks about a Amp'ex USN 6922... Go figure...

 

Still, I find that the expected minute difference actually makes a hell of difference during listening. While the '64 was great, realistic and detailed, I quickly felt the need to switch back to the OG, despite it being ever so slightly less detailed. There was no such pattern with the '62 tube. I've been running it since I put it on my amplifier. Color me surprised...

 

All in all, how would you rate the '61 US 6922 Amperex compared to the best 6SL7 offering - that Tung Sol tube? Having gotten close to the top on the 6DJ8 family (below $200 a tube at any rate), I'm curious as to what else the world has to offer (though I have 10000 hours of listening pleasure ahead of me with the '62 Amp'ex if I wish lol).

 

Unfortunately, in Joe's descriptions, he didn't provide the date of manufacture for these tubes, but focused primarily on the silk screening - color, text and graphics. However, I have to believe that his Amperex US white label PQ was manufactured sometime around 1961-62, and his Amperex US white label USN was manufactured sometime around 1964. As all my tubes carry the Beckman label, his physical descriptions based on silk screening are of no use at all.... :(

 

And I had the same experience with the lean and dry 1964 tube, never leaving it in the amp for any length of time in favor of the Voskhod 6N23P and the Sylvania 5751 TMBP. But now with the '61, I absolutely do not want to take it out! lol But yes, I need to roll the Tung Sol 6SU7 and Sylvania 5751 again to see how they stack up. Plus I have a 1975 Voshkod, Heerlen E188CC and French E88CC on the way.... Life is good. :)

post #4043 of 10503

Like Sil would say ¨When i tougth i was out ,they pullll me back in ! ¨                 

post #4044 of 10503
Quote:
Originally Posted by mordy View Post
 

Hi Artsi,

 

Does your favorite tube look like this one?

 

Otherwise yes and without bottom mica's "bumpers". Stamp is different. Mine has stamps like this without bottom bumpers. http://www.ebay.co.uk/itm/RARE-Matched-Pair-Ken-Rad-CKR-6SL7GT-VT-229-ECC35-tubes-Foil-getter-/171046481705

post #4045 of 10503

Hi Gibosi,

 

 

 

"I think my 1978 Voskhod 6N23P is just a bit better. And given that you can get these Voskhods for $3 to $5 each, they are a steal. You want to look for production years 1974 through 1979.
 

 

Could you give me a link where I can buy these tubes at the prices you quote?

post #4046 of 10503
Quote:
Originally Posted by mordy View Post
 

"I think my 1978 Voskhod 6N23P is just a bit better. And given that you can get these Voskhods for $3 to $5 each, they are a steal. You want to look for production years 1974 through 1979."

 

Could you give me a link where I can buy these tubes at the prices you quote?

 

My strategy:

 

Every day I searched world wide for newly listed 6N23P. Quite often, there would be 4 or 8 or 20 tubes listed. I then sent an email to the vendor asking if he had a pair of 1975 Voskhod 6N23P, for example. This particular year seems to be quite hard to find, so usually, the answer was no. However, in one instance, the vendor had 8 tubes for $40, and in his email, he told me that the lot included one pair of 1975, one pair of 1976 and two pairs of 1978. So I grabbed them:

 

http://www.ebay.com/itm/131044830184?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649

 

In another instance, the vendor had 20 tubes. I told him I was looking for a pair of 1977 and a pair of 1975. He replied that he had two 1977 and one 1975. We agreed on a price and he created a special auction with these three tubes:

 

http://www.ebay.com/itm/321249178270?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649

 

I hope to have these later this week or early next......

 

So it is not all that hard....  Search every day, and ask every vendor who lists a bunch of Voskhods if he has the years you want.

post #4047 of 10503

Got my octals today would anybody know the date of these tubes.Thanks.

post #4048 of 10503

The bottom picture TS: 37th week 1961

post #4049 of 10503
Quote:
Originally Posted by mordy View Post
 

The bottom picture TS: 37th week 1961

 

That's right.

 

Did the Sylvania tube come with a box?

post #4050 of 10503
Quote:
Originally Posted by Oskari View Post
 

 

That's right.

 

Did the Sylvania tube come with a box?

No.

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