Just got a used Art DI/O (stock so far). My source is the M-Audio Revolution in my computer, the destination is an RVK Mrk II headphone amp. I'm not getting any music and wonder if anyone has any tips on the mistakes I made in setup. Here's what I've done: 1) From soundcard, a digital IC from...

I'm a new owner of my first piece of tube equipment-an AudioValve RKV headphone amplifier. I tend to use it several times a day. My question is what rule of thumb should I use for turning the amp on and off-ie, if I'm gone 15 minutes, an hour, etc? I'm concerned about both maintaining equipment...

I have a pair of Senn 600's and no headphone amp. Generally I listen to them plugged into the headphone amp of my stereo (note term, old equipment) receiver. I spend more time at the computer and would like to be able to listen to them there. The computer is in the basement, near noisy furnace...