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filipm

Responses from filipm

Tube PHONO preamp interference - RFI, EMI, bad grounding?
@lewm That’s for sure - I’d only wrap the tubes or the unit into the foil for about a minute. It takes a while, about ten minutes before the tubes are warmed up. Sonically even longer, the real listening with the EAR starts after half an hour and ... 
Tube PHONO preamp interference - RFI, EMI, bad grounding?
@lewm I think what I have done with the baking pot proves that I'd have to use a sleeve for the cables as well. I have used 20 feet XLR cables to reach the other side of the room, closer to the router. Then I placed the router right next to the ph... 
Tube PHONO preamp interference - RFI, EMI, bad grounding?
So we powered the tube phono preamp with this battery. There was no change at all. Some added 50hz hum as we were messing around with the grounding.  I can now say for sure it's coming from the air.  @sbank Hey Spencer! :) When I read your pos... 
Tube PHONO preamp interference - RFI, EMI, bad grounding?
@audphile1 I get all kinds of responses that often oppose each other. If I followed everything, it would mean not to try anything at all. It might be ridiculous it’s the power line but I have to be sure. I have read one thread here on Audiogon ... 
Tube PHONO preamp interference - RFI, EMI, bad grounding?
@hagtech What RF filter are you using? There's many and don't know anything about these.  Looking at the guide, it's definitely not hum or buzz. I know what to do to make them appear. This is a very sharp beeping sound with a pulsing bass driver... 
Tube PHONO preamp interference - RFI, EMI, bad grounding?
probably yes, but what could that be? :) This one cost me $1100, sounds awesome at this price. Maybe Audio Research PH5 could beat it.  There are three  tubes but they are not left/right channels. All of them work for both channels equally. I hav... 
Tube PHONO preamp interference - RFI, EMI, bad grounding?
I was told to try the tubes first, simply because the tubes in the 834p are not exposed. They are covered by a thick piece of metal that should work as a Faraday cage.  Do you have any tip for the cylidrical shields? I have only found something o... 
Tube PHONO preamp interference - RFI, EMI, bad grounding?
I meant if I lift the device, the signal gets stronger. If I put it on the floor, it gets weaker. Just like a radio with an antenna.   Yes, I have just tried it again - turned of the only wifi router I have, along with a cellphone. It’s very sim... 
Tube PHONO preamp interference - RFI, EMI, bad grounding?
- I'm not using any switching power supply anymore with the dac nor with the streamer.  - The problem with the phono preamp was there since I bought it, about three months ago. I have tried unplugging everything, even a freezer. - Plugging in th... 
Tube PHONO preamp interference - RFI, EMI, bad grounding?
First of all, I live in an apartment. The building is pretty spaceous so I only have direct neighbors above and below me. The livingroom has a dedicated circuit (I can turn everything off on the main switch and leave the livingroom on). I have tr...