Hissing BeePre

[elko]

Since i fixed my humming problem in my left channel. I noticed another noise from the left channel only. In the left channel there's always a hissing noise present. I really want to get rid of it because its noticable in quiet parts of music. What steps do i need to take to diagnose the problem. Should i do a complete voltage & resistance check and find out of there are any differences in the left and right side? The right channel is dead quiet.

Best regards

 

[Alonzo]

Are you sure it's from the BeePre?  Swapped sources/channels/tubes?  If your BeePre measures within spec, check your source and amp for amplified background or interference being picked up.

 

[elko]

I turns out to be one of the tubes. Feel a bit stupid that i havn't checked first. Thought it was obvious there was something amiss with the left part the circuit since the hum came from there to.
Thanks for helping me out!

 

[Paul Birkeland]

Sometimes a few hours of running time will do a lot to quiet down a tube (even a new one).