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XLR8R22's picture
Last seen: 4 years 2 months ago
Joined: Apr 20 2011 - 2:58pm
A newbie ground question

I have an Onkyo Grand Integra M-508 amp coupled with the matching P-308 preamp.  Both units have a "GND" screw on the back, and I know on the preamp it is for the turntable ground.  What is it for on the amp?  Should I connect it in series to the preamp ground?  Or to an earth ground?  Or just leave it alone?

Kal Rubinson
Kal Rubinson's picture
Last seen: 4 days 13 hours ago
Joined: Sep 1 2005 - 9:34am
Do you have any hum or high

Do you have any hum or high background noise at normal listening levels?  If not, leave it alone.  If yes, try grounding it to the preamp ground, earch ground or both.



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