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?
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?