Let’s see some Tube Glow!

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123457

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  • SeleniumFalcon
    SeleniumFalcon Posts: 4,357
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    Yes, that's correct and those are EL34 tubes behind them for size comparison.
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  • mhardy6647
    mhardy6647 Posts: 35,505
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    845 or bust! :)
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  • invalid
    invalid Posts: 1,555
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    mhardy6647 wrote: »
    845 or bust! :)

    GM100
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  • invalid
    invalid Posts: 1,555
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    wyychrl7zqf7.jpg
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  • blademan13
    blademan13 Posts: 8
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    ARC VT60 sounding fabulous driving a pair of Monitor 12’s2ls8n27d5u2a.jpeg
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  • invalid
    invalid Posts: 1,555
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    g5zuuoyx9obu.png
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  • invalid
    invalid Posts: 1,555
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    815os42pfp5q.png

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  • pitdogg2
    pitdogg2 Posts: 27,757
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    That is gnarly!!
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  • treitz3
    treitz3 Posts: 20,275
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    Is tube blow blue or bliss?

    Tom
    ~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
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  • invalid
    invalid Posts: 1,555
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    Those old globe style 866 tubes from the 1920's sure do light up better than the later 866a version.
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  • pitdogg2
    pitdogg2 Posts: 27,757
    edited June 2025
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    uk9u18wgs9ag.jpg
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    A couple of Raytheon windmill getters and a Raytheon black plate 12ax7 in the signal path.
    Ear candy


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  • bcwsrt
    bcwsrt Posts: 2,639
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    Nice pics!

    Brian

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  • invalid
    invalid Posts: 1,555
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    t9uyfx2giajf.png
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  • mhardy6647
    mhardy6647 Posts: 35,505
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    mercury vapor...
    B)
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  • invalid
    invalid Posts: 1,555
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    mhardy6647 wrote: »
    mercury vapor...
    B)

    Old globe 866, these old ones seem to have a better glow, as I'm using them with a tube preamp, not much current draw.
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  • bcwsrt
    bcwsrt Posts: 2,639
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    Trying out the camera on the new iPhone …

    dpok3ch9yhp5.jpeg
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    jbofuurzvk4o.jpeg
    Brian

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  • heiney9
    heiney9 Posts: 25,625
    edited November 2025
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    Pass B1 w/Korg dual Triode tube.

    tg8ijwk07m0y.jpg
    cruoc03hzjgd.jpg

    https://www.firstwatt.com/wp-content/uploads/2023/12/art_diy_nutube_preamp.pdf

    https://www.firstwatt.com/wp-content/uploads/2023/12/art_nutube.pdf

    H9
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | EE Avant Pre | Holo Audio Cyan 2 Dac | MIT Shotgun S1 | Puritan Audio PSM136 Pwr Condtioner & Classic PC's | Legend L600 | Roon Nucleus 1 w/LPS - Tubes add soul!
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  • mhardy6647
    mhardy6647 Posts: 35,505
    edited November 2025
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    whoops... ne'er mind. :/
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  • pearsall001
    pearsall001 Posts: 5,384
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    ModWright Analog Bridge kdirlnb86e2w.jpg
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  • Clipdat
    Clipdat Posts: 13,101
    edited November 2025
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    bcwsrt wrote: »
    Trying out the camera on the new iPhone …

    dpok3ch9yhp5.jpeg

    Looking good! What kind of KT88s are you running? Such a smooth sounding power tube!

    Edit: Wait a sec, I guess those are actually KT120s?! My bad!
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  • newbie308
    newbie308 Posts: 833
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    heiney9 wrote: »
    Pass B1 w/Korg dual Triode tube.

    tg8ijwk07m0y.jpg
    cruoc03hzjgd.jpg

    https://www.firstwatt.com/wp-content/uploads/2023/12/art_diy_nutube_preamp.pdf

    https://www.firstwatt.com/wp-content/uploads/2023/12/art_nutube.pdf

    H9

    I remember when this kit was being introduced. I was intrigued by it and really wanted to build one. I remember signing up to be notified when they were available, but never got an email. How does it sound?
    Enjoying the journey while never attaining the destination.
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  • bcwsrt
    bcwsrt Posts: 2,639
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    Good eye! They are Tung-Sol KT120s.

    I will probably give some KT88s a try next, though.. Hear good things about Genalex.

    Brian

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  • heiney9
    heiney9 Posts: 25,625
    edited November 2025
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    newbie308 wrote: »
    heiney9 wrote: »
    Pass B1 w/Korg dual Triode tube.

    tg8ijwk07m0y.jpg
    cruoc03hzjgd.jpg

    https://www.firstwatt.com/wp-content/uploads/2023/12/art_diy_nutube_preamp.pdf

    https://www.firstwatt.com/wp-content/uploads/2023/12/art_nutube.pdf

    H9

    I remember when this kit was being introduced. I was intrigued by it and really wanted to build one. I remember signing up to be notified when they were available, but never got an email. How does it sound?

    Superb. It's amazing what a few parts implemented correctly can sound like. Simple circuits always sound better.

    The ambient retrieval, open and transparent are all excellent. The NuTube adds just enough warmth and adds to already excellent dimensional information. It's super quiet too.

    If you want less 2nd harmonic you can adjust the voltage to the cathode with the two trim pots.

    FYI, the kits are back in stock as of today. It's been a long wait.

    The only area I see that can make a pretty big improvement is the volume pot. A standard ALPs is included which does a good job. But to take the unit another level I'm getting a TKD shunt type volume pot.

    This is in my office rig running a pair of Pass ACA mono's in parallel configuration. Since it's more near field and lower volume listening an excellent tracking volume pot is essential.

    Speakers are Polk Audio R200's and they have never sounded better!

    I didn't build this one, I bought it assembled from a great seller.

    H9
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | EE Avant Pre | Holo Audio Cyan 2 Dac | MIT Shotgun S1 | Puritan Audio PSM136 Pwr Condtioner & Classic PC's | Legend L600 | Roon Nucleus 1 w/LPS - Tubes add soul!
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  • Clipdat
    Clipdat Posts: 13,101
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    bcwsrt wrote: »
    Good eye! They are Tung-Sol KT120s.

    I will probably give some KT88s a try next, though.. Hear good things about Genalex.

    I recently picked up a quad of GoldLion and also JJ KT88s for my Cayin Jazz 90 integrated. Will let you know how they are once I try them.
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  • tonyp063
    tonyp063 Posts: 1,153
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    Some old friends from Great Britain have come to visit for Christmas.

    h8ttiqc769ud.jpg
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  • Clipdat
    Clipdat Posts: 13,101
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    Nice XF2 Mullards! Score!
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  • Viking64
    Viking64 Posts: 7,764
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    I don't have any tube glow, but I sure could use some tub glue. :#

    da2nn41enek2.jpg
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  • TEAforONE
    TEAforONE Posts: 1,100
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    Viking64 wrote: »
    I don't have any tube glow, but I sure could use some tub glue. :#

    da2nn41enek2.jpg

    Try a little calk. That should do the trick.
    See my profile for list of gear.
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  • audioluvr
    audioluvr Posts: 6,053
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    Had a tube go bad so I'm doing some rolling!

    uk5vw9jyxxib.jpg
    Gustard X26 Pro DAC
    Belles 21A Pre Upgraded with Mundorf Supremes
    B&K M200 Sonata monoblocks refreshed and upgraded
    Polk SDA 1C's modded / 1000Va Dreadnaught
    Wireworld Silver Eclipse IC's and speaker cables
    Harman Kardon T65C w/Grado Gold. (Don't laugh. It sounds great!)

    There is about a 5% genetic difference between apes and men …but that difference is the difference between throwing your own poo when you are annoyed …and Einstein, Shakespeare and Miss January. by Dr. Sardonicus
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  • heiney9
    heiney9 Posts: 25,625
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    yfytm50iaddo.png

    Schiit Valhalla 2

    H9
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | EE Avant Pre | Holo Audio Cyan 2 Dac | MIT Shotgun S1 | Puritan Audio PSM136 Pwr Condtioner & Classic PC's | Legend L600 | Roon Nucleus 1 w/LPS - Tubes add soul!
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