Schiit Lyr Tube Rollers

Discussion in 'Headphone Amps (full-size)' started by joydivisi0n, Jul 23, 2013.
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  1. TK16
  2. TK16
    billerb1 and koover like this.
  3. billerb1
    Nice find TK
     
  4. TK16
    Wish me luck!
     
  5. ThurstonX
  6. TK16
    Somebody bid.
     
  7. ThurstonX
    LOL, is that how those work? I feel like such an eBay noob :older_man:
     
  8. TK16
    I think so there was a BIN at $99 with 0 bids bro.
     
  9. billerb1
    There was.
     
  10. gmahler2u
    Another luck stoke upon me today, got another pair of Tele E188cc...this time even sweeter deal!! $189.

    Good day!
     
    billerb1 likes this.
  11. billerb1
    Check Phantaminum for a pulse.
     
    Phantaminum likes this.
  12. AuditoryCanvas
    They arrived today. Tested almost perfect match on gm and plate current.

    Unfortunately, after 5 mins warm up, one of them gets so microphonic it creates a feedback howl, which just ends up a feedback loop, so it basically unusable :frowning2:

    Thankfully the seller has been really cool about figuring something out.

    I think it’s beyond rescuing with a damper, I’ve never heard a tube go so microphonic.
     
  13. kolkoo
    Try burning it in the amp 24hours on high gain see if that fixes, I'm fairly confident it might :)

    Edit: Feel free to unplug the headphones during that time.

    P.S. What tester are you using?
     
  14. AuditoryCanvas
    Hickok 539c, with a few panel meters added, one for plate current, the others for accurate line voltage and bias setting. Also have a Hickok 752.

    I'll have to unplug the headphones, or they'll get shredded as the feedback loop escalates. Are you sure the loop isn't going to damage the amp? it continually gets louder unless I pull the power.

    Wouldn't it make more sense to put it through its paces on the tester for a while at 150v plate?
     
    Last edited: Jan 13, 2018
  15. Phantaminum
    This is me right now:

    [​IMG]
     

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