Tubes Asylum

Comparing the RCA 6550 to the GE6550 and . .

172.56.81.240

John PA

I have several NOS pairs of each, to me, the RCA are noticeably better in transparency, dynamics and timbre.

iBasso DX300MAX Ti. Focal Utopia and Stellia. iBasso SR2. Mr. Speakers, Ether II, Voce stats. Manley, Absolute headphone amp. LTA MZ3, Z10e electrostatic amp. Many other headphones, amps, cables etc.

Follow Ups:

RE: Comparing the RCA 6550 to the GE6550 and . . - Mendel 11:05:20 01/30/23 (6)
The RCA are relabeled Tung Sol 6550 as RCA never made a 6550.
Great tubes as you say...-..
- But I thought the relabeled RCA from TungSol were the larger . - John PA 11:49:42 01/30/23 (5)
  bottle shaped tubes? These are straight sided 6650s. I have Tung Sol 6550 in grey plate with hole and the black plate but they are different. And some of my RCA are recognizable Tung Sol and the construction is different from the GE but same bottle type.
  
  iBasso DX300MAX Ti. Focal Utopia and Stellia. iBasso SR2. Mr. Speakers, Ether II, Voce stats. Manley, Absolute headphone amp. LTA MZ3, Z10e electrostatic amp. Many other headphones, amps, cables etc.
  - RE: But I thought the relabeled RCA from TungSol were the larger . - Mendel 12:05:06 01/30/23 (4)
    They may be relabeled Sylvania 6550. Can you post a picture?
    - I looked at some Sylvania 6550s and that is what they look . . - John PA 12:20:38 01/30/23 (1)
      like.
      
      iBasso DX300MAX Ti. Focal Utopia and Stellia. iBasso SR2. Mr. Speakers, Ether II, Voce stats. Manley, Absolute headphone amp. LTA MZ3, Z10e electrostatic amp. Many other headphones, amps, cables etc.
      - RE: I looked at some Sylvania 6550s and that is what they look . . - Mendel 12:24:39 01/30/23 (0)
        
        In Reply to: RE: I looked at some Sylvania 6550s and that is what they look . . posted by John PA on January 30, 2023 at 12:20:38
        
        Yes. A very good 6550. Enjoy!
    - I hadn't thought about Sylvania. . - John PA 12:17:20 01/30/23 (1)
      Here is an image. I have 4 of these.
      iBasso DX300MAX Ti. Focal Utopia and Stellia. iBasso SR2. Mr. Speakers, Ether II, Voce stats. Manley, Absolute headphone amp. LTA MZ3, Z10e electrostatic amp. Many other headphones, amps, cables etc.
      - RE: I hadn't thought about Sylvania. . - soundchaserkt66 20:39:34 02/08/23 (0)
        
        In Reply to: RE: I hadn't thought about Sylvania. . posted by John PA on January 30, 2023 at 12:17:20
        
        That's a relabeled Sylvania...

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