Had to go back to the internal SUT in my phono pre today because it needs to be at least 3 feet away from the preamp or phono pre to prevent hum. Is this normal? I don't really have the 3 feet available.
Should be close as possible. Above comments correct, use a good phono cable to connect to pre...hum can be reduced greatly by turning the sut....if you cannot hear hum at listening position, then there is No problem.
I use a .5 meter Atlas Elements Integra phono specific cable that has very low capacitance between the SUT and the phono preamp. Also, I do Not ground my SUT, as the turntable is already grounded to the phono preamp. Adding too many grounds will add noise. That is what I have found in my experimentation. Of course, all systems are different and I'd advise to do what works.
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