[JKDJedi]

I sent the seller (EbaY)two messages asking about the grey ghost (Sylvania) and no answer... the silence is killing me !!! How should I rate this in the communication? 1 star?

 

[thomaskong78]

Another person got 1578 tube this afternoon. His impression. big_greg 2,391 posts 05-28-2020 6:14pm First impression of the 1578 - wow! Looking forward to see how they sound after a little burn in.

https://www.ebay.com/itm/Matched-pair-Extremely-rare-1578-6N8S-audiophile-6H8S-6SN7-Metal-base/273874731266?ssPageName=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649 This afternoon, I got delivery of another 1578 Melz tube from Russia after one week from placing order. Very fast shipping. I had not got tubes yet from Ukraine that I ordered 5 weeks ago. This 1578 was made in 1980 and looks clean as Nos tube. After playing demagnetization track, I am listening to familiar music to me. "Thriller" by MJ sounds spooky with deep and full bass, wide and deep soundstage. Its bass, decay and soundstage is just beyond any other 6sn7 tubes. But people may get the impression that it is bass heavy. Now I have three pairs of 1587 Melz tubes and eight 6n8s tubes, I am going to stop shopping of 6sn7 tubes. After being back from Kr vt231 this morning, I found that 1578 give more body and decay while KR give almost same amount of details as 1578.

 

[JKDJedi]

Another person got 1578 tube this afternoon. His impression. big_greg 2,391 posts 05-28-2020 6:14pm First impression of the 1578 - wow! Looking forward to see how they sound after a little burn in.

https://www.ebay.com/itm/Matched-pair-Extremely-rare-1578-6N8S-audiophile-6H8S-6SN7-Metal-base/273874731266?ssPageName=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649 This afternoon, I got delivery of another 1678 Melz tube from Russia after one week from placing order. Very fast shipping. I had not got tubes yet from Ukraine that I ordered 5 weeks ago. This 1578 was made in 1980 and looks clean as Nos tube. After playing demagnetization track, I am listening to familiar music to me. "Thriller" by MJ sounds spooky with deep and full bass, wide and deep soundstage. Its bass, decay and soundstage is just beyond any other 6sn7 tubes. But people may get the impression that it is bass heavy. Now I have three pairs of 1587 Melz tubes and eight 6n8s tubes, I am going to stop shopping of 6sn7 tubes. After being back from Kr vt231 this morning, I found that 1578 give more body and decay while KR give almost same amount of details as 1578.

Dammit....now I'm craving another Russian made tube . I'm super curious now about these as @Paladin79 shares the same excitement about these tubes. To be or not to be....

Edit: this thread is hazardous to my wallet...I caved. From Russia with Love. Now to explain the $100 to the wifey..

 

[Ripper2860]

Just tell her what I tell mine -- $100 spent on tubes is $100 not spent on phone sex.

 

[JKDJedi]

Another person got 1578 tube this afternoon. His impression. big_greg 2,391 posts 05-28-2020 6:14pm First impression of the 1578 - wow! Looking forward to see how they sound after a little burn in.

https://www.ebay.com/itm/Matched-pair-Extremely-rare-1578-6N8S-audiophile-6H8S-6SN7-Metal-base/273874731266?ssPageName=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649 This afternoon, I got delivery of another 1578 Melz tube from Russia after one week from placing order. Very fast shipping. I had not got tubes yet from Ukraine that I ordered 5 weeks ago. This 1578 was made in 1980 and looks clean as Nos tube. After playing demagnetization track, I am listening to familiar music to me. "Thriller" by MJ sounds spooky with deep and full bass, wide and deep soundstage. Its bass, decay and soundstage is just beyond any other 6sn7 tubes. But people may get the impression that it is bass heavy. Now I have three pairs of 1587 Melz tubes and eight 6n8s tubes, I am going to stop shopping of 6sn7 tubes. After being back from Kr vt231 this morning, I found that 1578 give more body and decay while KR give almost same amount of details as 1578.

There's so many 1578 tubes out there hard to tell which ones to look for? Are these legit 1578? Do they have to have 1578 stamped on them?

 

[thomaskong78]

There's so many 1578 tubes out there hard to tell which ones to look for? Are these legit 1578? Do they have to have 1578 stamped on them?

This is from someone else

I have had older ones and ones with no 1578 etched in the glass. Not as good so far.

https://www.whatsbestforum.com/threads/shootout-of-nos-6sn7-tubes.30637/page-3


It will be safe to order one from the dealer that I got.

In addition he ship very fast.

If you order from other dealer, it may take more than 6 weeks to get it.

 

[Ripper2860]

Here's a guide I use...

 

[JKDJedi]

Here's a guide I use...

Your a lifesaver...I can sleep tonight..

 

[Paladin79]

Dammit....now I'm craving another Russian made tube . I'm super curious now about these as @Paladin79 shares the same excitement about these tubes. To be or not to be....

Edit: this thread is hazardous to my wallet...I caved. From Russia with Love. Now to explain the $100 to the wifey..

LOL it looks like you got your answer, the photos are not the best but those should be legit as best I can tell. A lot of the remarked ones have the proper characteristics, it just makes them easier to sell when there is a 1578 stamped on them. Hopefully you get the real deal, I know of folks who buy some of these and get one good one and one that was obviously marked 1578 but did not have the right criteria, and did not sound the same.

 

[JKDJedi]

They finally answered!

Hi, I was going through some 6SN7’s a while back and I found that tube with some other Sylvania tubes. I don’t remember where or when I got it. Everything about that tube is exactly the same as all the other Sylvania N7’s I have, mica wafers, internal construction etc. except it has grey plates. It’s definitely a Sylvania and it dates 1951. They must have done it for a very short while because I have other 2 hole types dating 1951 and they are black. A great collector tube. Thanks again. Best regards, Doug

 

[Paladin79]

They finally answered!

Hi, I was going through some 6SN7’s a while back and I found that tube with some other Sylvania tubes. I don’t remember where or when I got it. Everything about that tube is exactly the same as all the other Sylvania N7’s I have, mica wafers, internal construction etc. except it has grey plates. It’s definitely a Sylvania and it dates 1951. They must have done it for a very short while because I have other 2 hole types dating 1951 and they are black. A great collector tube. Thanks again. Best regards, Doug

I went through some of my Sylvanias but have not found a match yet. My 1578’s include matched pairs from 63, 69,73, and 86, all with the correct elements. All kinds of stamping and lack thereof. The 1963 is my favorite followed by the 1969's. The mids are nearly overpowering on some of the versions from the 70's and 80's IMHO. It makes them distinctive and easy to spot and maybe that is why this tube really jumps out at people compared to listening to a bunch of RCA's, or Sylvanias, or Tung Sols. The 63 to me has a more balanced sound over the whole spectrum once again IMHO.

 

[JKDJedi]

I went through some of my Sylvanias but have not found a match yet. My 1578’s include matched pairs from 63, 69,73, and 86, all with the correct elements. All kinds of stamping and lack thereof.

Nice collection there. Very nice.

 

[Paladin79]

Nice collection there. Very nice.

I have some at work for employees to listen to as well and a Tung Sol 5998. My employees constantly want to hear the amp I designed before they ship out to friends so the 63 Melz and Tung Sol are the baselines they use. It is a long wait but I can get the 63's at a very good price if I buy in volume but when you are buying capacitors that are $100 each and expensive transformers, and wire that is $60 a foot, it is a little tough to invest in a lot more tubes.

 

[JKDJedi]

I have some at work for employees to listen to as well and a Tung Sol 5998. My employees constantly want to hear I designed before they ship out to friends so the 63 Melz and Tung Sol are the baselines they use. It is a long wait but I can get the 63's at a very good price if I buy in volume but when you are buying capacitors that are $100 each and expensive transformers, and wire that is $60 a foot, it is a little tough to invest in a lot more tubes.

When my valve arrives I'll pair it with the 5998 first roll session. Excited.

 

[Paladin79]

When my valve arrives I'll pair it with the 5998 first roll session. Excited.

Which amp?