Hi, My amp (hartke hydrive 115c) doesn't have a headphone jack and I don't know exactly what to do to get some sound from it... There are two outputs in the back of the amp: 1 - Direct Output (XLR connector) 2 - Preamp Out / Send (1/4-inch jack) First I was thinking in getting a XLR to 1/4 cable to connect my headphone, but then I though that I would hear anything, because I think that the signal is not amplified (I'm really stupid in this! I'm saying those things without any knowledge). Moreover, I was also worried that it could blow my cans... I wasn't even thinking about the Preamp Out... Is there any problem if I connect my headphone directly there??? Am I gonna loose the volume control or something??? Any help!? !!!!!!