it seems that I won't get happy with my new Naim Superline. After the problems with a used Superline, which could not be solved, I've gone for a new Superline. While I've been waiting for the delivery, I got a used Superline from my dealer. Everything was fine, no problems at all and an incredible sound. After waiting about two months I got my new Superline and installed it in the system. It is powered by a HiCap DR and from there it goes into a NAC 272.
A few minutes after power on I heard a noise - something like a white or pink noise. When I put the cartridge on the vinyl the noise was blown away. The first impuls from the RP 10 was enough to kill the noise. But after listening to two or three vinyls the noise comes up again. Sometimes only power down the whole system for 15 minutes could avoid the noise.
The first idea was that the new Superline has an error. Now I got an other Superline from my dealer than I got while waiting for my new one. Unfortunately the story was the same.
The HiCap, power supply of the RP 10 and the Superline are placed in one rack. The distance between each component is about 30 cm. The RP 10 is placed on a wall mount above the Superline. The distance is about 20 cm to the Superline placed on the top of the rack. So I don't think that the noise is produced by the transformers.
Do you have any ideas what I could do to avoid the noise?
Thanks for your advice!