The Reference 6SN7 Thread

Apr 20, 2021 at 9:16 PM Post #4,171 of 10,669
Hello! Im a total tube noob and just getting into this hobby for fun, and I got a Little Dot Mk2 and purchased a pair of matched 6SN7's with adaptors. I got this pair because they were matched pretty well as far as I could tell (2600gm & 2700gm), and they were local at a good price. I've been enjoying these with some NOS Voskhod's (trying these after the Mullards in the pic) , and as I look more into tubes I want to ask if my tubes being from different generations (50's and 60's I assume, reading the original post) is bad in some way. I dont really notice any channel imbalance or anything, but if its a good idea to buy a more exact matching tube I would like to know! 1618967351820.png
If you do not hear any imbalance you are fine. If I match tubes I try to get within 10% but 5% is even better.
 
Apr 20, 2021 at 9:23 PM Post #4,172 of 10,669
If you do not hear any imbalance you are fine. If I match tubes I try to get within 10% but 5% is even better.
Okay, good to know! Was just reading that there were slight differences in the sound of the chrome-top and the yellow label 6SN7s according to some people, and was wondering if that might be affecting what I hear in some way that I dont notice
 
Apr 20, 2021 at 9:37 PM Post #4,173 of 10,669
Okay, good to know! Was just reading that there were slight differences in the sound of the chrome-top and the yellow label 6SN7s according to some people, and was wondering if that might be affecting what I hear in some way that I dont notice
I hope your amp never needs repair, I fixed one a few months back and I spent more time just getting it apart than trouble shooting it lol and I have considerable experience with such things. :ksc75smile:
 
Apr 20, 2021 at 9:38 PM Post #4,174 of 10,669
Okay, good to know! Was just reading that there were slight differences in the sound of the chrome-top and the yellow label 6SN7s according to some people, and was wondering if that might be affecting what I hear in some way that I dont notice
If it sounds good to you, I wouldnt worry about it!
 
Apr 21, 2021 at 1:57 AM Post #4,175 of 10,669


Listening to a 1954 Melz with perforated plates, power tube is a GE 5998A.

The Melz holds it own, a different sound that the classic 1578 but a few steps above Fotons. 😺 I apologize for the cat hair between tubes, Finnegan was warming himself by the tubes earlier.
How did Finnegan enjoy the GE 5998A, scornful and dismissive of the brand as discerning cats can be, or enjoying a surprising new flavor of musical catnip?
 
Apr 21, 2021 at 9:04 AM Post #4,176 of 10,669
How did Finnegan enjoy the GE 5998A, scornful and dismissive of the brand as discerning cats can be, or enjoying a surprising new flavor of musical catnip?
Finnegan was mostly trying to stay warm lol, it snowed here last night and got down to 28 degrees. All my amps are Class A with the exception of a Mjolnir I have running in the same rack so they do put out some heat. I use open headphones so he normally hears the music, if I had to guess I would say his opinion of the GE was similar to my own. :pouting_cat: :pouting_cat: :pouting_cat: :ksc75smile:

After today I will have collected eleven opinions on the GE, we did hit a snag and I need to try to resolve that for one gentleman who writes wonderful reviews of audio gear, It may be late next week because I value his opinion. I may also have a better idea why a gentleman from Brazil disliked the tube after I examine two more of them.
 
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Apr 21, 2021 at 9:26 AM Post #4,177 of 10,669
Finnegan was mostly trying to stay warm lol, it snowed here last night and got down to 28 degrees. All my amps are Class A with the exception of a Mjolnir I have running in the same rack so they do put out some heat. I use open headphones so he normally hears the music, if I had to guess I would say his opinion of the GE was similar to my own. :pouting_cat: :pouting_cat: :pouting_cat: :ksc75smile:
Did you ask Finnegan? And, if I had to guess, Finnegan has a wider high frequency hearing range than us: ==> more sensitive to presence, if any, of odd harmonics...
 
Apr 21, 2021 at 9:26 AM Post #4,178 of 10,669
Points very well-taken Tom. I do enjoy trying non-standard tubes in Elise BUT first review the data sheets as best as my limited knowledge allows, and generally only try alternatives other head-fi'ers have had success with. With prices of 6080's and 6SN7 top tier rising this does open up some less spendy alternatives, and results can be excellent. I do think the Melz '63 6SN7 you sent my way are superb (BTW how are the '56's, some appeared recently on Ebay at decent prices?) and some of the Sylvanias (VT-231 for example) remain a good value.

Currently installed are Mullard EL34's driven by Sylvania VT-115A's, adapters from @Deyan. There is a small bit of hum that is inaudible with most music, and the powers run cooler than my other favorite GEC 6080 which sounded great with the Melz '63.

Bottom line: It's nice to have options and I am enjoying the sound with EL34 / VT-115A tube set.
Mullard (Lorenz) EL34 & Sylvania VT-115A in Elise (4-18-21).jpg
Pardon my noobiosity, but is the EL34 a common swap out on the Elise? Any risks or downsides to the swap? There seems to be way more of them than the 6AS7.
 
Apr 22, 2021 at 1:32 AM Post #4,179 of 10,669
Pardon my noobiosity, but is the EL34 a common swap out on the Elise? Any risks or downsides to the swap? There seems to be way more of them than the 6AS7.
None that I've encountered, feel free to PM me if you have specific questions about 6SN7 vs. EL34 in Elise.
 
Apr 22, 2021 at 3:11 PM Post #4,180 of 10,669
Some mail is better than others 😃:
A5CBAC68-9F8C-4A2B-9D3E-487A2A482B1A.jpeg
 
Apr 22, 2021 at 5:09 PM Post #4,181 of 10,669
Some mail is better than others 😃:A5CBAC68-9F8C-4A2B-9D3E-487A2A482B1A.jpeg
Be even sweeter if those are tall bottle Frankies. Haven't yet seen one with an RCA label, but you never know.
 
Apr 22, 2021 at 5:57 PM Post #4,182 of 10,669
They are not of the “tall” variety but they do have the smoked glass. [ I really like the RCA smoked glass 6SN7GT in the Woo WA6 / Woo WA22 - excited to put the 7N7s in play. The adapters are standing by... ]
44CBE1FE-7039-4B15-876E-72B4B791AD46.jpeg
 
Apr 23, 2021 at 12:56 AM Post #4,183 of 10,669
They are not of the “tall” variety but they do have the smoked glass. [ I really like the RCA smoked glass 6SN7GT in the Woo WA6 / Woo WA22 - excited to put the 7N7s in play. The adapters are standing by... ]44CBE1FE-7039-4B15-876E-72B4B791AD46.jpeg
Be interested to hear how those sound. I have a few gray glass tall bottles, but no RCA's.

7N7 Frankie USN 1942 1.jpg

7N7 Hytron Gray Glass.jpg
 
Apr 23, 2021 at 1:25 AM Post #4,184 of 10,669
Be interested to hear how those sound. I have a few gray glass tall bottles, but no RCA's.


I will post. I will use the RCA 7N7s with Woo adapters versus CBS/Hytron 5692s with Woo adapters. The music will be acoustic jazz / R&B* on 2-3 CDs that I know almost by rote. The rest of the gear: Audiolab 6000-CDT, Mojo Audio EVO Mystique DAC, Woo Audio WA6, Norne Vykari hp cable, ZMF Auteur; accessories: Furman Elite 15i power conditioner, Morrow Audio / Furutech cables. [*Sorry, no Manson or Cardboard Cowboys]
 
Apr 23, 2021 at 2:11 AM Post #4,185 of 10,669
Evening, Im hoping some of you fine folks can share some knowledge. Im looking for a variety of 6SN7 tubes that DO NOT have strong bass.

Ive got some Focal Clears and they play better with my less bassey tubes. I had a tung sol in tonight that sounded kinda crappy with my HD6XXS but sounded great with the clears. I want strong/forward vocals, fleshed out mids and clear and clean treble.

Thanks in advance... and I have no prejudice over GE tubes..... Sorry Bill...
 

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