LYR: Faint, staticky, high-pitched noise issue - Page 2

My clock radio would always buzz the second before a call or text would come into my phone.  Sometimes, the phone could be several feet away and the same would still happen.

Seems it was mostly EFI... moved further from the computer helped a bit, but the biggest difference was unplugging the USB cable from the DAC from a hub and directly into the computer (even tho I heard the noise with the DAC disconnected, evidently it was looping through the power cord or something?)

Was still a bit of static bursts left, however swapping tubes swapped the channels, so apparently I have a noisy tube (still burning in, so it may go away).

I feel soo much better now :)

thanks to all!

I've successfully been able to eliminate tube static several times by taking a brass brush and cleaning off the tube pins.  Then, rinse with isopropyl alcohol.  Clean looking pins aren't always actually clean.
 

Quote:

Originally Posted by SeaHawk 

 

Was still a bit of static bursts left, however swapping tubes swapped the channels, so apparently I have a noisy tube (still burning in, so it may go away).

 

I feel soo much better now :)

 

thanks to all!

FWIW, rolled in some russian 6N1P-EVs and the hiss was cut to a level it's barely audible.  Seems the stock JJ-E88CCs are a bit noisy for those of us with higher sensitivity headphones.

Now I have to try some other tubes to see what happens.. oh god my wallet...