I’m wondering whether some ferrite bead chokes on the inputs would help my Eros2. No, I don’t hear any obvious interference, but I notice that some phonostages ( such as Zanden) make a big deal out of RFI prevention. Tom Christiansen puts chokes on the (line-level) inputs of his amps. There’s enough exposed wire on the tonearm to pick up ample noise, which could in theory cause nonlinearities even if above the audible range.