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Woo Audio Amp Owner Unite

Discussion in 'Headphone Amps (full-size)' started by dannie01, Jun 9, 2009.
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  1. joseph69
    I have the WA33 and I'm running S EML 2A3's and wanted to buy their 5U4G to compare to my UE 596. I mentioned this to another member who also has the WA33 running the M EML 2A3's and their 5U4G. Just so happens we were both considering purchasing each others tubes blindly, so we decided to send each other our rectifiers mentioned to compare side by side for 1 week each.

    Both of agreed 100% that the 596 had a bigger sound stage, more speed, clarity and detail. The 5U4G sounded
    narrow, slow, darker and congested in comparison rison.Needless to say this saved me from buying the 5U4G, but he immediately bought the 596. I'm not saying that the 5U4G was bad, but nowhere near the performance of the 596 in our comparisons, or I would've definitely purchased it being I'm running EML's already.
    Last edited: Sep 17, 2019
  2. JLoud
    I found some decent prices on EML tubes at tubeaudiostore.com and tubeusa.com. Woo makes beautiful amps but are on the High side for tubes.
  3. JLoud
    I tried a pair of USAF 596 in my WA5le and found that while they seemed faster the soundstage was definitely not bigger. They sounded more "digital" and less analog. I would agree they sound darker, which is what I enjoyed about them. Could depend on source, or difference between the WA33 and WA5. And everything is in the "ears" of the listener.
    joseph69 likes this.
  4. attmci
    Have u tried 422A?
  5. Astral Abyss
    I'm really happy with the EML 274b in my WA6-SE. To me, it's a nice improvement over the Sophia Princess 274b and the EML blue glass 5U4G that I also own... Albeit for almost 3x the price.
    Last edited: Sep 18, 2019
  6. PatekBruguetMogul
    Wanting to purchase a high end power cable for my newly ordered WA5 and want to keep it around USD$1000.00 ?

  7. JLoud
    I have not tried 422A. How does it compare. Particular brand recommended?
  8. sillysally
    If you want the best of the best in your WE5le, I can highly recommend something like I have. Matched pair of Western Electric 300B made in 1956 and the same week in july, along with a matched pair of Tung Sol US Navy CTL 6SN7GT made in August 1942 and a matched pair of Emission Labs 5U4GM mesh plates.
    Last edited: Sep 20, 2019
  9. sillysally
    Black Sands Z1 violet power cords, Iron Lung Jellyfish power cords
  10. PatekBruguetMogul
    Thanks for such sound advice on 1940's things for my 2019 newly built amp..
  11. attmci
    I didn't roll rectifiers. I have mostly GZ34s including the metal one. But the WE 422A stays all the time with those clear-top 5998.

    Do u think those 596s are overpriced? Jump from $10 to $100, and now to $200.
    Last edited: Sep 20, 2019
  12. Roasty
    Hey guys

    On my WA22 2nd gen

    If I use:
    Western Electric 421a or Tung Sol 5998 power tubes with ECC35 drivers, I get this moderately loud background hum from the left or right channel (it changes sides if I swap positions of either the power or driver tubes).

    However if I use:
    1) 6080 power tubes with the ECC35 drivers, it's completely silent background.
    2) WE421A / TS 5998 with any non-ecc35 driver tubes, it's completely silent background.

    I guess that means the amplifier only produces the hum when combining we421a/5998 with ecc35 tubes? Has anyone else had this issue?
  13. attmci
    Never have this problem with various 421/5998/ECC35 combination. Something is wrong with one of your tubes.
    Roasty likes this.
  14. Roasty
    I have:
    1 pair matched we421a
    1 pair matched TS 5998
    2 pairs of matched mullard ecc35

    The hum comes with any combination of the above. Can it be I hit the jackpot and all pairs are faulty?

    But when I use we421a/5998 with non ecc35 drivers, or when I used ecc35 drivers with non 421a/5998 power, I don't get the hum.
  15. attmci
    ECC35 has higher mu.
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