I found what appear to be RCA 6CA7s...

Discussion in 'Amps/Cabs Tech Corner: Amplifier, Cab & Speakers' started by JDW3, Jul 7, 2006.


  1. JDW3

    JDW3 Member

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    Is there any way to be sure these are real 6CA7s? They also say el-34 on them. Would original 6CA7s also say el-34? They are the shorter, fatter bottle type.

    Printing appears like this basically:

    6CA7
    EL-34
    U.S.A.

    thanks
     
  2. JDW3

    JDW3 Member

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    I'm not sure how to get pics on this page. I could send them to you PM. I have about 5 pics.
     
  3. V846

    V846 Member

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    I had some as you describe and they were identical to Sylvania 6CA7 , I don't believe RCA made that number so I bet RCA relabel them .
     
  4. DEMENTED

    DEMENTED Supporting Member

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    Is the a little hole in the center locating pin? Do the plates look welded or crimped..if they are welded they are probably Sylvanias. Nice tubes.
     
  5. JDW3

    JDW3 Member

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    Yes, there's a little hole in the pin. Sylvanias? The spot welds are gold, 5 per side.

    What are these tubes worth? What years did Sylvania make them?
     
  6. V846

    V846 Member

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    Believe Sylvania 6CA7 came out in 1973 followed by GE's version in 1975, not sure when production ceased nor the value
     
  7. DEMENTED

    DEMENTED Supporting Member

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    They sound like they are real 6CA7 Sylvanias, The gray etching that says "6CA7, EL34, USA" is one clue, the welded plates is another as is the hole in the centering pin. It's hard to say the value, are they NOS, NIB? used? have they been tested? They aren't worth big money like Mullards if that is what you are asking. But they are good tubes so they are worth having.
    Email me picsif you want....are they for sale?
     
  8. goneracin

    goneracin Member

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    I would also be interested in seeing the pics of these
     
  9. brad347

    brad347 Member

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    HA HA HA HA sorry i don't even know remotely what these are worth but that just sounded funny.
     
  10. DEMENTED

    DEMENTED Supporting Member

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    Glad I amuse you, I meant they aren't $300 a pair tubes like Mullard EL34's.

    Since I can't pay 300 a pop I'd wondered if he is trying to sell these...HAHAHA :rolleyes:
     
  11. brad347

    brad347 Member

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    I'm glad too! I'm not implying you're trying to screw the guy, the sentence just looked funny in print.

    Like... "Oh, a '59 Les Paul... nobody plays those pieces of junk anymore... give you 500 bucks for it"

    :cool:
     
  12. DEMENTED

    DEMENTED Supporting Member

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    Well, if they are for sale I'd be interested.
     
  13. JDW3

    JDW3 Member

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    The amp sounded killer that these were installed in. I do have pics. I'll try to email them to you.
     
  14. Dana Olsen

    Dana Olsen Gold Supporting Member

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    I used Sylvania 6CA7's in my Jim Kelly amp for a while (don't ask - repair on the road in like '88 - Kelly's usually use 6V6's, but the 6CA7's were all the repair guy had that would work. We used a pair of 'em in place of 4 6V6's). They sounded tremendous. Their tone in that amp sort of straddled the area between a 6L6 and an EL-34, like a very glassy EL-34.

    Wonderful tubes.

    Dana
     
  15. Blue Strat

    Blue Strat Member

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    Probably closer to $200 per pair and rising by the second.
     

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