Nothing changes when I change the volume. Neither does the H/L switch.

Do the filaments light when the unit is on? Yes, the tubes are light up Is the source sending signal? Plugging the headphones directly in the 1/4 plug in my computer sound card, it works Is the input selector switch in the back in the appropriate position? Yes, and I've tried them all *just in...

Hey! I just purchased one, and I cannot get it to play anything, either by RCA or USB.. What could I possibly be doing wrong? I feel really stupid right now..

Bump

Hello, I'm a bit lost here.   I'm looking to invest into a desktop amp.   I'm not sure what to buy. I'm not sure where to buy. I'm from Canada. Do I need any extra cord? I'll be using it with HD650, on the computer I have a Soundblaster ZxR My budget is around $500, but feel free to...