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  1. #1
    Junior Member
    Join Date
    Jun 2019
    Location
    Hangzhou
    Posts
    7

    Help with 300b tube - conversion?

    I just bought some nos 300b tubes - however they have 6 pins in base - and I need to fit them into a 4 pin socket... Never navigated this issue before. Is it possible to buy a convertor? Or is there another way? All help much appreciated. Best wishes.

  2. #2
    Super Moderator
    Join Date
    Apr 2013
    Location
    NY
    Posts
    17,327

    Re: Help with 300b tube - conversion?

    Welcome to the forum.


    Are you 100% sure they are 300B tubes? Are there any markings on the tubes? What brand? This does not sound right.
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  3. #3

    Re: Help with 300b tube - conversion?

    I have never heard of a 6 pin 300B. I think you got hosed and I hope you can get your money back.
    Micro Seiki SX-8000 air bearing table, SME 312s arm, SME 3012R arn, Dynavector XV-1s cartridge, Lyra Etna SL cartridge, ARC Ref 3 phono stage, Otari MX-55 2 track R2R, Ampex 350 tape repros, Roon Nucleus Plus music server, PS Audio DSJ DAC, ARC Ref 6, ARC Ref 75 with KT-150s, JBL 4345 speakers, Viero Equilibro Level 3 speaker cables, and Definitive Technology Ref subs.

  4. #4
    Junior Member
    Join Date
    Jun 2019
    Location
    Hangzhou
    Posts
    7

    Re: Help with 300b tube - conversion?

    Quote Originally Posted by mep View Post
    I have never heard of a 6 pin 300B. I think you got hosed and I hope you can get your money back.
    Thanks - I thought they were to good to be true - and, plainly, they were! Best wishes and thanks again!

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Help with 300b tube - conversion?

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