6sn7 single/individual tubes

13

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  • verb
    verb Posts: 10,176
    edited October 2019
    Thanks Ivan! :) Always appreciate the learning!

    What do you know about the red Sylvania lettering? Seen quite a few out there as well!
    wro1coemv6c5.png
    Basement: Polk SDA SRS 1.2tl's, Cary SLP-05 Pre with ultimate upgrade,McIntosh MCD301 CD/SACD player, Northstar Designs Excelsio DAC, Cambridge 851N streamer, McIntosh MC300 Amp, Silnote Morpheus Ref2, Series2 Digital Cables, Silnote Morpheus Ref2 Series2 XLR's, Furman 15PFi Power Conditioner, Pangea Power Cables, MIT Shotgun S3 IC's, MIT Shotgun S1 Bi-Wire speaker cables
    Office: PC, EAR Acute CD Player, EAR 834L Pre, Northstar Designs Intenso DAC, Antique Sound Labs AV8 Monoblocks, Denon UDR-F10 Cassette, Acoustic Technologies Classic FR Speakers, SVS SB12 Plus sub, MIT AVt2 speaker cables, IFI Purifier2, AQ Cinnamon USB cable, Groneberg Quatro Reference IC's
    Spare Room: Dayens Ampino Integrated Amp, Tjoeb 99 tube CD player (modified Marantz CD-38), Analysis Plus Oval 9's, Zu Jumpers, AudioEngine B1 Streamer, Klipsch RB-61 v2, SVS PB1000 sub, Blue Jeans RCA IC's, Shunyata Hydra 8 Power Conditioner
    Living Room: Peachtree Nova Integrated, Cambridge CXN v2 Streamer, Rotel RCD-1072 CD player, Furman 15PFi Power Conditioner, Polk RT265 In Wall Speakers, Polk DSW Pro 660wi sub
    Garage #1: Cambridge Audio 640A Integrated Amp, Project Box-E BT Streamer, Polk Tsi200 Bookies, Douglas Speaker Cables, Shunyata Power Conditioner
    Garage #2: Cambridge Audio EVO150 Integrated Amplifier, Polk L200's, Analysis Plus Silver Oval 2 Speaker Cables, IC's TBD.
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  • pitdogg2
    pitdogg2 Posts: 25,447
    Looking at the chrome top and base size late 60's. Any date codes? If the boxes are legit then sold and all warranty was through distributor snd not Sylvania.
    See end here.

    http://pax-comm.com/pa01039.htm
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  • verb
    verb Posts: 10,176
    I stumbled upon that link! Pretty cool info! :)
    Basement: Polk SDA SRS 1.2tl's, Cary SLP-05 Pre with ultimate upgrade,McIntosh MCD301 CD/SACD player, Northstar Designs Excelsio DAC, Cambridge 851N streamer, McIntosh MC300 Amp, Silnote Morpheus Ref2, Series2 Digital Cables, Silnote Morpheus Ref2 Series2 XLR's, Furman 15PFi Power Conditioner, Pangea Power Cables, MIT Shotgun S3 IC's, MIT Shotgun S1 Bi-Wire speaker cables
    Office: PC, EAR Acute CD Player, EAR 834L Pre, Northstar Designs Intenso DAC, Antique Sound Labs AV8 Monoblocks, Denon UDR-F10 Cassette, Acoustic Technologies Classic FR Speakers, SVS SB12 Plus sub, MIT AVt2 speaker cables, IFI Purifier2, AQ Cinnamon USB cable, Groneberg Quatro Reference IC's
    Spare Room: Dayens Ampino Integrated Amp, Tjoeb 99 tube CD player (modified Marantz CD-38), Analysis Plus Oval 9's, Zu Jumpers, AudioEngine B1 Streamer, Klipsch RB-61 v2, SVS PB1000 sub, Blue Jeans RCA IC's, Shunyata Hydra 8 Power Conditioner
    Living Room: Peachtree Nova Integrated, Cambridge CXN v2 Streamer, Rotel RCD-1072 CD player, Furman 15PFi Power Conditioner, Polk RT265 In Wall Speakers, Polk DSW Pro 660wi sub
    Garage #1: Cambridge Audio 640A Integrated Amp, Project Box-E BT Streamer, Polk Tsi200 Bookies, Douglas Speaker Cables, Shunyata Power Conditioner
    Garage #2: Cambridge Audio EVO150 Integrated Amplifier, Polk L200's, Analysis Plus Silver Oval 2 Speaker Cables, IC's TBD.
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  • verb
    verb Posts: 10,176
    I found, ahem, stumbled upon this link as well. Good background info on 6SN7 tubes!
    https://www.head-fi.org/threads/the-6sn7-identification-guide.209782/
    Basement: Polk SDA SRS 1.2tl's, Cary SLP-05 Pre with ultimate upgrade,McIntosh MCD301 CD/SACD player, Northstar Designs Excelsio DAC, Cambridge 851N streamer, McIntosh MC300 Amp, Silnote Morpheus Ref2, Series2 Digital Cables, Silnote Morpheus Ref2 Series2 XLR's, Furman 15PFi Power Conditioner, Pangea Power Cables, MIT Shotgun S3 IC's, MIT Shotgun S1 Bi-Wire speaker cables
    Office: PC, EAR Acute CD Player, EAR 834L Pre, Northstar Designs Intenso DAC, Antique Sound Labs AV8 Monoblocks, Denon UDR-F10 Cassette, Acoustic Technologies Classic FR Speakers, SVS SB12 Plus sub, MIT AVt2 speaker cables, IFI Purifier2, AQ Cinnamon USB cable, Groneberg Quatro Reference IC's
    Spare Room: Dayens Ampino Integrated Amp, Tjoeb 99 tube CD player (modified Marantz CD-38), Analysis Plus Oval 9's, Zu Jumpers, AudioEngine B1 Streamer, Klipsch RB-61 v2, SVS PB1000 sub, Blue Jeans RCA IC's, Shunyata Hydra 8 Power Conditioner
    Living Room: Peachtree Nova Integrated, Cambridge CXN v2 Streamer, Rotel RCD-1072 CD player, Furman 15PFi Power Conditioner, Polk RT265 In Wall Speakers, Polk DSW Pro 660wi sub
    Garage #1: Cambridge Audio 640A Integrated Amp, Project Box-E BT Streamer, Polk Tsi200 Bookies, Douglas Speaker Cables, Shunyata Power Conditioner
    Garage #2: Cambridge Audio EVO150 Integrated Amplifier, Polk L200's, Analysis Plus Silver Oval 2 Speaker Cables, IC's TBD.
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  • pitdogg2
    pitdogg2 Posts: 25,447
    Yep seen it before .... Then lost it glad to have it back. Bookmarked ;)
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  • bcwsrt
    bcwsrt Posts: 1,887
    Bumping this back up for @pearsall001 after running across it in a search just now. Lots of good 6SN7 info in here. Thought he may find it helpful when he’s ready to do some tube rolling in his new Rogue Ninety-Nine.

    Brian

    One-owner Polk Audio RTA 15TL speakers refreshed w/ Sonicap, Vishay/Mills and Cardas components by "pitdogg2," "xschop" billet tweeter plates and BH5 | Stereo REL Acoustics T/5x subwoofers w/ Bassline Blue cables | Rogue Audio Cronus Magnum III integrated tube amp | Technics SL-1210G turntable w/ Ortofon 2M Black LVB 250 MM cart | Sony CDP-508ESD CD player (as a transport) | LampizatOr Baltic 4 tube DAC | Nordost & DH Labs cables/interconnects | APC H15 Power Conditioner | GIK Acoustics room treatments | Degritter RCM
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  • Clipdat
    Clipdat Posts: 12,937
    Nice. And I've actually been casually looking for single 6sn7 again, was thinking about bumping this thread anyway.
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  • mhardy6647
    mhardy6647 Posts: 33,804
    edited March 6
    Clipdat wrote: »
    Nice. And I've actually been casually looking for single 6sn7 again, was thinking about bumping this thread anyway.

    Oh?
    I'll send you a few culls, if you want!
    Least I could do. ;)

    PS They'll be good culls, not just cannon fodder. I'll check 'em quantitatively & qualitatively! :)

    24506449367_eaaa1ca0c1_b.jpg
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  • Clipdat
    Clipdat Posts: 12,937
    Chrome domes, baby!
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  • Clipdat
    Clipdat Posts: 12,937
    edited March 6
    mhardy6647 wrote: »
    Clipdat wrote: »
    Nice. And I've actually been casually looking for single 6sn7 again, was thinking about bumping this thread anyway.

    Oh?
    I'll send you a few culls, if you want!
    Least I could do. ;)

    PS They'll be good culls, not just cannon fodder. I'll check 'em quantitatively & qualitatively! :)

    lol feels like I'm having Deja Vu.

    WE'VE DONE THIS BEFORE! :p
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  • mhardy6647
    mhardy6647 Posts: 33,804
    Clipdat wrote: »
    mhardy6647 wrote: »
    Clipdat wrote: »
    Nice. And I've actually been casually looking for single 6sn7 again, was thinking about bumping this thread anyway.

    Oh?
    I'll send you a few culls, if you want!
    Least I could do. ;)

    PS They'll be good culls, not just cannon fodder. I'll check 'em quantitatively & qualitatively! :)

    lol feels like I'm having Deja Vu.

    WE'VE DONE THIS BEFORE! :p

    I don't know who I've sent what to -- fortunately, so far (!?) I've managed not to buy back too many things that I donated to charity auctions and fleamarkets. :blush:
    It's fun getting old, I'll tell ya.
    It's fun getting old, I'll tell ya. Oh? Did I mention that already?
    It's fun getting old, I'll tell ya.
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  • Clipdat
    Clipdat Posts: 12,937
    edited March 7
    You can say that again.
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  • mhardy6647
    mhardy6647 Posts: 33,804
    Clipdat wrote: »
    You can say that again.

    Did I say something?
    :#
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  • WagnerRC
    WagnerRC Posts: 2,158
    I have a few here that may be worthy.

    h2b1780pwee7.jpg

    nvbbk0oondv9.jpg
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  • Clipdat
    Clipdat Posts: 12,937
    Nice collection! Are you using those or just hanging onto them?
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  • WagnerRC
    WagnerRC Posts: 2,158
    I just have these hanging around here. I am willing to part with a few. I would have to see what I paid for them. I will never use all of these. I found the popes that I wanted so these are part of my collection of tubes. I know I didn't loose any money buying these a few years ago.
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  • WagnerRC
    WagnerRC Posts: 2,158
    These 2 look interesting.

    rlblffh6xkzp.jpg
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  • bcwsrt
    bcwsrt Posts: 1,887
    Ha! Those, or some that are very similar, are mentioned on page 2 of this thread.

    Brian

    One-owner Polk Audio RTA 15TL speakers refreshed w/ Sonicap, Vishay/Mills and Cardas components by "pitdogg2," "xschop" billet tweeter plates and BH5 | Stereo REL Acoustics T/5x subwoofers w/ Bassline Blue cables | Rogue Audio Cronus Magnum III integrated tube amp | Technics SL-1210G turntable w/ Ortofon 2M Black LVB 250 MM cart | Sony CDP-508ESD CD player (as a transport) | LampizatOr Baltic 4 tube DAC | Nordost & DH Labs cables/interconnects | APC H15 Power Conditioner | GIK Acoustics room treatments | Degritter RCM
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  • pitdogg2
    pitdogg2 Posts: 25,447
    edited March 7
    Unless those Russian 6sn7 tubes are Melz, other than that meh. When I first started buying 6sn7 tubes you could buy the Russian MELZ tubes for $20 a pair. They're now as pricey as RCA 5692's.
    Out of all the Russian 6sn7 tubes they would be the only Russian tubes I'd be interested in. They are the best of the best in Russian tubes. MELZ stood for Moscow Electric Light and something or another.

    https://www.ebay.com/itm/266658754052?

    Bob,

    Are those 1950's looking Sylvania tube boxes reproduction or original? If they're original I'd be REAL interested in what's in those...
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  • ken brydson
    ken brydson Posts: 8,762
    mtssdpczy2o5.jpg
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  • VR3
    VR3 Posts: 28,649
    edited March 8
    What an incredibly small human
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • mhardy6647
    mhardy6647 Posts: 33,804
    edited March 13
    ken brydson wrote: »
    mtssdpczy2o5.jpg

    Not a direct substitute for a 6SN7, though.
    And the filament current supply might be tricky to implement.
    B)

    EDIT: On the other hand, it (probably) is a triode. Probably low mu, though.

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  • invalid
    invalid Posts: 1,365
    mhardy6647 wrote: »
    ken brydson wrote: »
    mtssdpczy2o5.jpg

    Not a direct substitute for a 6SN7, though.
    And the filament current supply might be tricky to implement.
    B)

    EDIT: On the other hand, it (probably) is a triode. Probably low mu, though.

    Looks like a thyraton
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  • mhardy6647
    mhardy6647 Posts: 33,804
    invalid wrote: »
    mhardy6647 wrote: »
    ken brydson wrote: »
    mtssdpczy2o5.jpg

    Not a direct substitute for a 6SN7, though.
    And the filament current supply might be tricky to implement.
    B)

    EDIT: On the other hand, it (probably) is a triode. Probably low mu, though.

    Looks like a thyraton

    That's what I get for shootin' from the hip. :p
    Yup, it does indeed.
    Thyratron -- useful for thermonuclear bombs, radar, and remote controls, not so much in hifi.
    They are kinda triode-y, though. B)

    https://en.wikipedia.org/wiki/Thyratron
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  • pitdogg2
    pitdogg2 Posts: 25,447
    edited March 13
    (in special high-voltage applications or applications requiring very short switching times) hydrogen.

    I BET that was a very "short" switching time ...like nano-second...it's ALL ON....KERPOW!
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  • Clipdat
    Clipdat Posts: 12,937
    beep boop
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  • Clipdat
    Clipdat Posts: 12,937
    What is it about TUBES?!
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  • mhardy6647
    mhardy6647 Posts: 33,804
    umm -- they're full of vacuum?
    Talk about cognitive dissonance.
    B)
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  • mhardy6647
    mhardy6647 Posts: 33,804
    Not all tubes are magic, though.
    1B3 HV rectifiers, e.g., from the days of B&W TV.
    Not magic.
    tthyqq9l5yym.jpg

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  • bcwsrt
    bcwsrt Posts: 1,887
    Question: Is there any burn-in for tubes?

    I see some conflicting info on this. I got a pair of 6SN7s a couple days ago. My 12AU7 and 12AX7 experience says “no,” but I’m wondering what the more experienced tube rollers have to say.

    These are some very low/no hour early-50’s NOS 6SN7s that I’m wondering about. There are some things that I really, really like about these tubes and a couple that the jury is still out on. I really wish I would have a chance to exercise the volume control a little more (which will happen in time). That could sway my opinion one way or the other, for sure.

    Brian

    One-owner Polk Audio RTA 15TL speakers refreshed w/ Sonicap, Vishay/Mills and Cardas components by "pitdogg2," "xschop" billet tweeter plates and BH5 | Stereo REL Acoustics T/5x subwoofers w/ Bassline Blue cables | Rogue Audio Cronus Magnum III integrated tube amp | Technics SL-1210G turntable w/ Ortofon 2M Black LVB 250 MM cart | Sony CDP-508ESD CD player (as a transport) | LampizatOr Baltic 4 tube DAC | Nordost & DH Labs cables/interconnects | APC H15 Power Conditioner | GIK Acoustics room treatments | Degritter RCM
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