If any components (except the one you are grounding-amp. preferred) has a three-pronged plug on the AC power cord,this will set up a ground loop,
and therefore a hum, decause the is now grounded in two places-wall and interconnect. Add a grounding cheater to the plug to convert it from the three-pronged to the ungrounded two-pronged type.
Ground the tonearm grounding wire to the preamp chassis if you are using analog front end.
and therefore a hum, decause the is now grounded in two places-wall and interconnect. Add a grounding cheater to the plug to convert it from the three-pronged to the ungrounded two-pronged type.
Ground the tonearm grounding wire to the preamp chassis if you are using analog front end.