To Aesthetix users

Hi guys, my Io has the latest resistors, so that isn't the problem.

I haven't tried swapping the PS tubes... no EL34s lying around (or rather there are some, but I'm not sure how good they are). No tube tester either :-(

Patrick

Patrick, it definitely sound like RF. I bet if you placed the Io somewhere else it would not be affected by the RF. I don't think changing the el34's will do anything. BTW is this noise recently developed?

Hi Nkj,

It's difficult to say whether the noise developed recently, but I didn't notice it until I moved the system in my room, about 4-5 months ago.

Subjectively, though, it seems to be getting louder.

Best
Patrick

An update. Jim and I have definitely identified this as RF and narrowed it down to the Io. It's not tube noise and it's not a grounding problem and it's not coming from the turntable. It doesn't make any difference which outlet it's plugged into, and it doesn't make a difference which circuit it's plugged into in the house.

Next test will be borrowing some longer interconnects so that I can move the Io around and see if the RF is being transmitted through the air.

If that doesn't work it, it's a dedicated line to the Io and/or borrowing Running Springs Duke power filter dedicated solely to the Io.

I thought regular readers might appreciate an update!

Patrick

I plugged mine into a Power Wedge Ultra 116 and noticed a slight buzz. However the buzz was resolved when I plugged it into the wall outlet.