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Pass Labs - WHAMMY diy headphone amplifier

Discussion in 'DIY Audio Forum' started by SpeedyRodent, Feb 5, 2018.

  1. SpeedyRodent

    SpeedyRodent Member

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    Thomas savage and amirm like this.
  2. amirm

    amirm Founder/Admin CFO (Chief Fun Officer) Staff Member

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    That's a very nice, informative and frank talk! It gets technical but if you get past that, there is good bit of wisdom expressed in there.

    The only thing I found a bit odd was series resistors everywhere including power pins for the Opamps. I get the usage of them during design to measure current but in a working system I would just leave them out.
     
  3. Dimitri

    Dimitri Member

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    They might be there to avoid turning the amp into an overengineered oscillator ( at least R17 / R27).
     
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