I just bought a Studio Channel from Guitar Center and plugged it in. No lights on but the needle on the VU spikes all the way to the right. Not sure if I need a new tube or if there's something else wrong with it.
I've narrowed this down to Guitar Center providing me with the wrong power supply. I was given a 9V instead of what I really needed. Still not sure if that's a 12V or an 18V yet though. The Studio Channel powers on with a 12V but, the VU does not light up, nor does it allow microphone audio to pass through. Connecting the mic directly to the interface works perfectly fine. I get absolutely nothing when I run a mic to the back of the Studio Channel, then an XLR from the output to the interface.
