I am experiencing noise in the left-hand channel.
Without a record playing I turn the volume up and there is a loud whooshing noise from the left-hand speaker but not the right.
( I disconnected the TT from the mains and unplugged the tonearm cable from the phono stage, and a sqwarking noise, like a radio not tuned in properly, comes from both speakers.)
I swapped the left and right connections over on the interconnect from the phonostage to the SN3, the whooshing noise now comes from the right-hand speaker.
I have tried a different RCA cable from the phonostage to a different input on the amp, and I get the same results as a above.
I do not get the whooshing noise when I switch to unused inputs on the amp.
My router is upstairs on a different ring circuit
Is there anything else I should check?