Carmantom
1000+ Head-Fier
I'm pulling my head out trying to track down a hum in headphone system. Specs are: Matrix X-Sabre Dac > WA7P Power Supply > WA7 Amplifier > Audeze LCD2 Zu Power cable All cables shielded and high quality. I have changed several sets of tubes i both P.S. and Amp thereby ruling those out. I have changed power cords. I haves tried 3 different out lets in different parts of the house. I went to attic and got the solid state power supply. I hooked it up and everything was fine. No hum. Now my problem is to my ears there is considerable difference between the solid state and the tube power supply. I highly prefer the WA7P over the SS PS. I wondered about ground loop and figured if solid state did not give hum and tube did out of the same outlet, that would probably rule that out. I had also wondered about the jack, but after it worked with the solid state I ruled that out. I must mention it does not get noisier when I turn the volume up. I must also say this is a very low hum in the right ear and not the left. This ruled out my imagination. Some might not be bothered by a slight hum, but it drives me crazy since I listen to a lot of classical, often with long pauses. To me the space between the notes are as important as the notes. I want black background only. i am not used to hum, especially with Woo Audio. I am always ok with a premium for there components since they are great quality. My WA6 SE was totally black.
If anyone has any ideas I would appreciate them.
If anyone has any ideas I would appreciate them.
