MagneQuest/Peerless Forum

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Original Message

RE: SET Headphone amp

Posted by Gordon Rankin on August 3, 2016 at 14:33:47:
ON,

I have built a number of these for customers using the TL404, Dowdy Choke and tube rectifier. I use AC heaters with the 45 and use a 10 or 20 turn hum pot and was able to make the AC noise less than 0.25mV at 60Hz. I don't use any DC regulation but do use a LCLC power supply and usually a 5Y3 rectifier and the LCLC is more like LC---split LC for each channel.

You really have to think about grounding here and the layout.

Thanks,
Gordon