Hello everyone. I'm sorry for the delayed reply, but I didn't get any email about new replies. Anyway, I've got some news that I'll add after @Drewan77 post because I think it might be related. I want to thank everyone for the continued support. You have all been amazing. Thanks a lot for this suggestion. I even reached out to the official dealer here in Europe not knowing Thomann sold it. Still, I'd prefer spending this amount on a tonearm rewire that I think would also solve the issue (although it'd void the warranty). This has crossed my mind before and you might be right. Or at least it is something that was common across the 3 receivers I tested it with. I tested it with a 70s Pioneer, a 90s Marantz (mine) and a Denon AVR from 2003 (also mine). All three are receivers, so maybe the arm is picking up something and the poor grounding is not good enough to deal with it. Now I need to find a stereo amp with a phono stage to test. About the news now. First of all, I'm finishing up on the renovations, so I think I'll have it all setup in 2 weeks. Then I'll call the store technician in. In the mean time, I decided to try the Denon out again. I was using it when I first noticed the buzz because the Marantz was acting up (right channel failed a couple times) and I decided to swap to the Marantz again when I began testing. Anyway, I ran speaker wire from the Denon's ground screw to the mains, just like I did with the Marantz, and the buzz is a lot less noticeable than it was with the Marantz. It is still definitely there and I can't rule that the issue is with the receiver because, without the speaker wire, it's still really loud and annoying. One thing I noticed is that I need to push the volume up a lot more on the Denon to reach the same level as, let's say, 50% of the knob on the Marantz (which is really loud already). Maybe this is related to why the buzz is less noticeable on the Denon? Maybe the Denon is less sensitive? Does this even make sense? It's amazing how many persons have issues with Regas and, still, nothing is done on their part. I'm sorry to hear that, hope you get it fixed somehow. It could be, but don't forget I tested it with a multimeter and there was continuity. I still need to test the four cartridge wires, I'll do that on the weekend and report back. But the internal ground wire is properly connected. Thanks a lot for sharing. Could you please keep me updated? How did you reach Rega, through the dealer? About the rewiring, I totally agree. It's a shame that it voids the warranty and I'll try the dealer's way first, but I'm not happy with the interconnects anyway so I guess it's a win/win. Again, please keep me updated. Thank you!