I got the Stellar Phono Preamp several months ago, and have been troubled by a variable whistling noise, usually in both channels, from the beginning I am using a Rega P6 turntable with the Rega MC cartridge. I have tried re-routing all cables related to the SPP; I have started using XLR balanced cables from the SPP to my main preamp, and most recently I have attached ferrite chokes to all the cables related to the SPP. After speaking to someone at PS Audio for technical assistance, I started using the variable loading feature which helped some.
I have found one other thread dealing with this problem. I would appreciate any current recommendations regarding this problem. I note that one reviewer mentioned this problem.
Rega’s have integrated cables. Whenever I’ve had a sound anomaly with my Rega P8 it’s been cable related. I would check the cables in the cartridge and also the rca’s and their integrity.