Most fridges make some kind of background noise—a hum, a soft whoosh, the occasional click. You stop noticing it…until one ...

I tested out a used High Fidelity X-Can v2 tube headphone amp at a local high end audio store. I tried it there and it was extremely impressive hooked up to some quality CD Player. There wasn't even ...

I'm trying to figure out a way to deal with a ground loop problem I have at home, this is 60hz mains hum that comes out of speakers, even when nothing is connected to the device besides power cable. I ...