Hello   I've been using a pair of HD600 headphones for nearly a decade now. I've always just plugged them directly into the computer or iPod, never used an amp before.   My HD600 headphones are not sound very good anymore, so I figure it's time to upgrade.   I've done some extensive...

Hi, I love music and about a year ago I bought a pair of Sennheiser HD 600 headphones. At about $400 I took quite a leap of faith buying something I'd only read reviews online about, but the first impressions I had were amazing and over the last year I've enjoyed my music like never before...