On Mon, Aug 12, 2013 at 08:05:24AM -0700, Rusty Perez wrote: > Anyway, I'm hearing a low level hum, sortof like a grounding hum. > > Does anyone else use the ART line of pres? Has anyone had trouble with them? > > The unit uses 2 tubes and I'm sure they aren't high quality tubes. > Could a lower quality tube cause a low level ground hum? The tube itself, no. The power supply, yes. > The unit has a grounded plug, and I can't seem to get rid of the hum > by unplugging other components, but when I mute the unit through my > sound card, the hum is decreased. The hum is audible in silences on > my tracks, so I know it's not just my playback system. Which sound card is the preamp connected to, and how (type of input, cable, etc.) ? Ciao, -- FA A world of exhaustive, reliable metadata would be an utopia. It's also a pipe-dream, founded on self-delusion, nerd hubris and hysterically inflated market opportunities. (Cory Doctorow) _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user