[120717]

Static+something that could be a voice is quietly audible since I plugged my Audio Technica ATH-AD2000 into my Little Dot MK VII.
It could just be static, but I was wondering if anyone else has got radio on their amp before.
It's only on the left.

 

[moonshake]

It happens with my heedcanamp with lo impedance phones. K 701, K 271 and you can practically listen to the radio with Grados when the volume pot of the amp is on 0 gain till 3o´clock. I don´t know why you hear the RFI on only on the left channel though. Could resolve most of the issue with a ferrite core attached near the stereo jack of the headphone´s cable. Hope it helps

 

[120717]

A ferrite core?
How would I buy/use this?
Thanks.

 

[pj_rage]

I don't know if it's the same thing but...

http://www.head-fi.org/forums/f5/tub...up-emi-478492/

Gently rest your finger on the left channel driver tube, see if the sound goes away.

Be careful depending on how hot it is. Or other reasons this might be a bad idea that I'm not aware of (finger oil on hot glass is never good). It should tell you pretty quick if the tube is picking up EMI.

 

[120717]

SS amp but thanks.

 

[moonshake]

Baluns Traps and Ferrites - Moonraker UK Limited

 

[120717]

Thanks.
Will it affect the SQ?

 

[moonshake]

No, I don´t think so (..but don´t quote me on this).
Try to get a ferrite clip in a size that is as close as possible to the diameter of the cable of your ATH-AD2000. If it fits loosely on the cable, loop the cable one or more times around one of the ferrite clip to anchor it before closing it.
Good luck