Hello, I am running a Macbook Pro 15" into an edirol USB interface which connects to my Samson Rubicon R6a monitors via XLR. My power supply causes horrible noise in my monitors a …

I'm doing some field recordings with electret microphones. The manufacturer says they require a voltage between 2 and 10 volts. My Zoom H2N recorder delivers something around 2 to …

Hi all, At home I monitor on passive Dynaudio Acoustics BM5s, which I like very much. However, as my power amp has broken, I'm looking for a replacement. For the money (~£160) the …

I have the +48V push rectangle on my small Behringer 602A. How do I know if the phantom power is on or off? Is it on when the light is red and button is pushed in? I am starting …

Does anybody know of a reasonably inexpensive portable (i.e. battery powered) phantom power supply? Most of the ones I've seen are in the $150-$200 range. Or is that in itself in …

Using power conditioning? What type and what for? Either Studio or Field/Location rigs?