Hi pivetta- In addition to what Stefani brings up, you might want to try one of the following (or both having been through this recently with a new phono pre and turntable).
I too had a bad hum and what solved it for me was to place the phono pre away from all other equipment and also swapped out my "fancy" silver interconnects with some basic shielded RCA cables.
You should try moving the phono pre first and then maybe a cable swap. I'd be surprised if these changes don't solve the problem for you.
I understand that rack placement of the gear may not be ideal, but could make a night and day difference.
Try it out and report back.
Greg
I too had a bad hum and what solved it for me was to place the phono pre away from all other equipment and also swapped out my "fancy" silver interconnects with some basic shielded RCA cables.
You should try moving the phono pre first and then maybe a cable swap. I'd be surprised if these changes don't solve the problem for you.
I understand that rack placement of the gear may not be ideal, but could make a night and day difference.
Try it out and report back.
Greg