Hum Reduction

We all start somewhere
User avatar
Dave the bass
Amstrad Tower of Power
Posts: 11367
Joined: Tue May 22, 2007 4:36 pm
Location: NW Kent, Darn Sarf innit.

Re: Hum Reduction

Post by Dave the bass » Sat Apr 01, 2017 9:24 pm

Wild shot from the back of the class MrC....Have you meaured with a DVM that the earth pin on the mains cable to the amp to a screen on the input Phono socket is 10R and that the metal casework is very low R to the same earth pin?

Then do the same with the Pi connected to the amp whilst the Pi is powered by its PSU.
"One pound of middle cut pork leg joint,
Stew my foot and call me Brenda".

Post Reply