Fake Tubes?

Toolfan66
Toolfan66 Posts: 17,221
edited July 2023 in Electronics
Is it just me or do these tubes look fake? Never seen BB’s with a logo looking like this. Or was this a USA version?

https://www.ebay.com/itm/134647029309?_trkparms=amclksrc=ITM&aid=777008&algo=PERSONAL.TOPIC&ao=1&asc=20221115143056&meid=539b20f8bc904075bb7040f46255a717&pid=101612&rk=1&rkt=1&itm=134647029309&pmt=0&noa=1&pg=4375194&algv=RecentlyViewedItemsV2&brand=Amperex&_trksid=p4375194.c101612.m4236&_trkparms=parentrq:4290a8301890ad59f7128e28fffffbd8|pageci:46391d39-1f8a-11ee-853b-ceda2443a949|iid:1|vlpname:vlp_homepage
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Comments

  • Toolfan66
    Toolfan66 Posts: 17,221
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  • Viking64
    Viking64 Posts: 7,042
    I wonder if they blow as soon as they warm up. :#
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  • pitdogg2
    pitdogg2 Posts: 25,412
    I like how he's seemingly kind of CYA in the description...maybe "reissued". I've not seen that logo before. I'm not saying they're fake, I've not seen that. I have some 12ax7 BB's it's definitely trumpet like. I've also seen the disc getters, I've not seen that structure before. Truth be told I have nothing that uses that tube so I've not researched them.
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  • invalid
    invalid Posts: 1,363
    edited July 2023
    I believe Richardson electronics bought amperex and relabeled a lot of tubes. They also bought cetron, I have some cetron 3b22 rectifiers that came in Richardson electronics boxes.
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  • heiney9
    heiney9 Posts: 25,165
    Bugle Boy was an American marketing tool. I don't use 6922 tubes which were introduced after the 12A*7 signal tubes. Only the very early 6922's had the Bugle Boy logo.

    Since I am not familiar with the 6922, I can't say. Anytime you see a tube that has pristine graphics but it's supposed to be old, be suspicious.

    In it's day it may have been a BB 6922 and re-labeling, while suspicious, may just be what it is...re-labeling of a long worn label.

    Unless you're 100% sure, just move on to the next pair.

    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 | EE Mini Max Supreme DAC | MIT Shotgun S1 | Pangea AC14SE MKII | Legend L600 | BlueSound Node 3 - Tubes add soul!
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  • heiney9
    heiney9 Posts: 25,165
    I don't see the cross hatch on top of the tube. It appears on the photo's the bottom of the tube is tapered or "pinched". I don't see any etched codes in the pictures. This is in comparison to the older 1959 versions. Perhaps later versions had a slightly different build.

    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 | EE Mini Max Supreme DAC | MIT Shotgun S1 | Pangea AC14SE MKII | Legend L600 | BlueSound Node 3 - Tubes add soul!
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  • audioluvr
    audioluvr Posts: 5,578
    edited July 2023
    Oddly, I saw the title as "Fake B 00 BS"

    Disappointed ☹️
    Gustard X26 Pro DAC
    Belles 21A Pre modded with Mundorf Supreme caps
    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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  • msg
    msg Posts: 9,994
    Yeah. Sometimes fake tubes are okay, and other times they exhibit strange performance characteristics.
    I disabled signatures.
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  • Keiko
    Keiko Posts: 764
    It it's too good to be true. . . You know the rest.
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