Sounds to me like a loose ground wire or maybe a bad phono interconnect cable or just a bad tonearm or cartridge connection..
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It's more of a buzzing sound at high volume. I ran a ground from the bottom of the tonearm (threaded part) to the preamp and it helped somewhat but it is still there. If I disconnect the phono cables from the preamp inputs the bzzzing stops completely with only a very minor hissing sound at high volume. Thank you.
I own a Rega P5 with the 700 tonearm. It is similar to the 1000. The Rega wiring from the tonearm has NO separate ground wire. The ground is IN the RCA for one channel. SO DO NOT have a separate ground at all!!!
Just the RCAs, no ground wire.
If you have a separate ground wire remove it and see if the ground problem stops.
Well here is the latest in the never ending Buzzzzz saga. I have an old Marantz 6025 TT that I bought new in the 80s. I plugged it into my preamp and... buzzzzz. I grounded the Marantz to the Arcam preamp and the buzzing got better but was still there. I have a Rega phono stage that I had on another system a couple of years ago so I thought what the ...., I'll give it a try. I plugged it into the auxillary of the preamp and...no buzzzzz. It looks like I will have to get a phono stage. I never really liked the Rega phono stage before or now. Any suggestions w/o breaking the bank? A friend told me that a EAR was the best that he had ever heard but that break the bank comes into play again. Thanks to all for your help.