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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. Badas
    Tung-Sol 6F8G is my go to driver. I snapped up 16 pairs. 5 years latter I still haven't gone through a set.
    I also snapped up 6 sets of NU VT-99. A little leaner but sweeter to my ear. Great tubes.
     
  2. SonicTrance
    Wasn't it 6C8G that you bought back then? I seem to remember that. Maybe you have 16 pairs of 6F8G as well what do I know :)
    Point is that 6C8G and 6F8G are very different tubes. They might look similar, or the same, but the operating points and tube characteristics are completely different.
     
  3. Wildcatsare1
    I’m in need of assistance, my W5 started distorting this afternoon, I get music, but it’s mixed with white noise. Any idea which tube(s) I should look at first?
     
  4. elira
    If it's both channels I would take a look at the rectifiers. The other tubes should not interfere. If it's just one channel you can swap one by one to see which one has issues.
     
    Wildcatsare1 likes this.
  5. SonicTrance
    Tap with your finger on the tubes, one at a time, and listen if the noise stops. It probably will.
     
    Wildcatsare1 likes this.
  6. Velozity

    Care to part with a pair?
     
  7. Wildcatsare1
    @SonicTrance , @elfary

    I’ve isolated the issue, it’s my Hugo2 DAC, with both optical and coax inputs, do you have experience with Chord (or any other DAC) doing this?
     
  8. elira
    I’ve had similar issues with other DACs but the issue was the computer that was connected to the DAC. Try rebooting your source.
     
  9. thecrow
    If i can throw @Currawong under the bus he had a couple of youtube videos on the hugo2 and he might be able to help. He seemed to be all over exactly how it works re interconnect options (pluses and minuses)

    (I hope that’s ok Amos)
     
    Wildcatsare1 likes this.
  10. Badas
    LOL. Right you are. I forget the codes now. I just use them.

    I do have 6 sets of the of the 6F8G TS round plates as well + the small version (can't remember the code). I didn't hear a sound difference. Just a volume difference.
    The NU tubes can be a hit or miss. Some can be noisy.
     
  11. Currawong Contributor
    Yes. Sometimes a computer (or phone or tablet) can have issues sending to a DAC and with that you get distortion. The other thing that comes up (though more rarely) is if an amp has the volume control not on the input, but after a gain stage (Audio-gd for example) and the input is being overloaded. I don't remember offhand, but I think Woo Audio amps are all volume-control-on-input so I can't imagine this happening.
     
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  12. Wildcatsare1
    I substituted my Mojo and everything worked, I appreciate your advice. Could an amp throwing off a bit of dc damage a DAC? The follow up to that is are there any reports of the WA5 or Milo doing so?
     
  13. ajheyl
    I have the WA6 2nd Gen. I don't do a lot of tube rolling. BUT I am finding that there is magic in swapping tubes around regardless or pricey vs more affordable. I found that 13 FD7's Fat Bottles were lacking some power with the Sophia Princess. The 13DE7's pumped it up a bit. With a recommendation of the $35 Brimar NOS 5Z4G rectifier I wasn't wowed per se...but then I popped the Fat Bottles in and the Wow factor hit. Just a lot more power with better bottom end. I have several cans but seem to keep using my Focal Elears.
     
  14. VandyMan
    Will I damage the WA5 LE 2 if I have headphones plugged into both the single-ended and balanced headphone outputs at the same time? (I think it is ok, but the manual does not address it, so I want to be sure.)
     
  15. Luke-
    Hi

    I was hoping someone could give some impressions of what WA7 Tps sounds like compared to the WA8 I’m thinking of selling my WA7 and trying WA8 I would like the best of both worlds portability and desktop.
    I currently have the EH gold pins in the amp and Mullards in the power supply.

    Any feedback would be great

    Thanks
     
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