I'm using a pair of Sennheiser HD280 Pro Closed-Back Headphones and what I'm experiencing is after finding mic placement/settings and levels for all instruments (inc. guitars, bass, drums, even vocals) is a great quality sound through the phones, however upon listening to the same thing through speakers, sounds very different, and quite frankly, a lot worse. Even the vocals, (I use these headphones when tracking) sound good in the phones, and after being happy, I'll switch to the speakers and the vocals will sound off-pitch and unappealing. These are supposedly great headphones for noise attenuation which helps our drummer hear the metronome and all that good stuff. The only thing is they appear to me like "ear goggles," in the sense that they warp my perception of something that may just be downright ugly to begin with. We don't have great monitors (we hook up the macbook w/garageband into a decent panasonic boom box, or plug it into creative computer speakers with a subwoofer). I know they're not great...well, not even good monitors, but my feeling is, those are mediums where you would listen to a normal CD, and if it sounds like crap on them, the listener won't give any sympathy to the fact that "well, it sounded good on our headphones." Is this a normal phenomenon?