I have a Project Carbon EVO turntable connected to a pair of Sonos Fives, a pair of ones and a Beam plus a Sub but there is a slight static hissing sound very faint but audible, the turntable is connected to a Project phono box S2 and I’ve taken all the connections out then reconnected it twice, I thought it may have been a grounding issue but it’s not.
any thoughts how to fix?