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• Telefunken ECC83 ribbed vs. smooth - opalize 18:21:35 03/08/24 (0)
  In Reply to: RE: Recommended 12AX7s for FM-3 tuner? posted by ltman on March 08, 2024 at 16:37:22

  ...for your listening pleasure!
  
  Yeah - as mentioned, most often the "Dynaco"-branded 12AX7 is actually a Telefunken. But Dynaco used both smooth-plate and ribbed-plate versions of the Telefunken ECC83. Of those two, I feel that the ribbed-plate is actually a lot more accurate in its full sonic spectrum. You'll get higher treble extension from the ribbed-plate, and fuller low frequencies.
  
  Lots of folks like the smooth-plate Telefunken, and they have their reputation because of their unique upper-midrange emphasis, without having pokey treble that can cause listening fatigue. They'll have less bass content than the ribbed-plate. And if treble is something you'd like to avoid or minimize, then I'd say choose smooth over ribbed. Personally, I hear greater signal clarity with the ribbed.
  

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• You probably have Telefunkens already or some other Euros (nt) - Byrd69 16:48:44 03/08/24 (0)
  In Reply to: RE: Recommended 12AX7s for FM-3 tuner? posted by ltman on March 08, 2024 at 16:37:22

  .
  
  
  Your interest may vary but the results will be same. (Byrd 2020)
  
  I can't compete with the dead. (Buck W. 2010)
  
  Cowards can't be heroes. (Byrd 2017)
  
  Why don't catfish have kittens? (Moe Howard 1937)
  
  

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