hobbes101

Responses from hobbes101

Never heard an amp do this before, ideas?
@ieales    yes, all volumes levels and on all channels. Covering the unit with a faraday blanket does attenuate the sound.  
Never heard an amp do this before, ideas?
@knock1 I didn't know it's bad, but yes normally I have both speakers attached, I had been moving it around testing and wanted to make a quick video.  
Never heard an amp do this before, ideas?
@ieales yes, it has a headphone jack and I unattached the speakers, the sound comes through the headphones.  
Never heard an amp do this before, ideas?
@ieales thanks for the suggestions, I purchased some plugs and I'll try that!   I have svs speaker cables, but it happened with headphones and no cables too.  
Never heard an amp do this before, ideas?
@oldaudiophile led lights on dimmers, a WiFi router, hvac, and refrigerator. A few switching power adapters plugged in throughout the apartment. Florescent lights in the bathroom.   All of these things are suspect to me, most are pretty far from... 
Never heard an amp do this before, ideas?
@yage unfortunately yes, inputs have no effect.   
Never heard an amp do this before, ideas?
@mwinkc it's a (not very safe) bypass on ground, so you can rule out ground loop issues. I think you're right, it's environmental. Unfortunately I don't think it's related to electricity, it's probably radio interference. Because the only thing th... 
Never heard an amp do this before, ideas?
Update: wrapping a faraday blanket over the unit dampens the sound. But the source of the RFI is not from my apartment, because it happens with everything in the apartment unplugged and off. Does this mean all tube amps will do this and I'll have... 
Never heard an amp do this before, ideas?
@mastering92 thanks for the advice, I tested two primaluna amplifiers, both did it. I also tried a cheater plug.