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Phono Pre-amp Hum

Today I was listening to some vinyl and noticed that in between quiet passes, I was hearing a hum through my speakers.

I proceeded by powering off / on various components to see which one was causing this humming sound. I found out that it was the external phono pre-amp.

My external phono pre-amp is a Dynavector P-75 MKII which I'm using with the Dynavector DV-20X Low MC cartridge on a VPI Scoutmaster turntable. The rest of the system is all Linn.

Any idea why I'm getting this hum?
agiaccio

Showing 1 response by ebuzz

ebuzz
104 posts
 
I am also hearing a low level hum, but mine happens as soon as I connect any device. I've tried some of the fixs I've seen here: started by disconnecting the balanced inputs to the power amp (Threshold T-100) and there is no hum, so that means its not from the speakers.
Then I disconnected every component. As soon as I connect any device, (EAR 834P; tube CD plyer no matter what) I get the hum. I've tried cheater plugs, ground wires. Can't figure it out.
Any ideas?
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