Hello there, I got a new pair of headphones today and I'm having some sound quality issues. I had been previously using a pair of Sehnheiser HD210 until those broke and then I had a pair of Sehnheiser HD218, which aren't really for studio but more for iPods and connecting to the laptop. Both gave me a somewhat-decent sound quality when connecting to the headphones output in my UX1. The ones I got today are a pair of Beyerdynamic DT770 Pro, they are supposed to be awesome as entry-level studio headphones. When I plugged them to my laptop the sound quality is amazing, but when I plugged them into the UX1 everything sounds way fuzzy or way too bright, specially with high gain presets from POD Farm it's almost like a square-wave synth at times. At first I thought that it might have something to do with the impedance and I checked. The DT770 have a nominal impedance of 80 Ohm, which is below what later I found in the FAQs here to be the recommended range (150-600 Ohm). The curios thing is that the Sehnheisers have a nominal impedance of only 24 Ohm, and I don't get this distortion from them. What might be happening here? I can return the DT770 and get them in the 250 Ohm version (thank God for Amazon) but I'd like to find out if the impedance is really the problem here, as evidence points to the contrary.