Ultrasone HFI 580 Impressions and Measurements
I can't figure these out. On some tracks, the HFI580s have a lot of bass. On others not so much. This effect is similar to the TH900, so I'm betting the bass response is similar tonally to the TH900 with the TH900 actually extending lower than the HFI580.
Despite the bass, I can't say the HFI580 sounds warm. After the bass hump, there seems to be a rising response toward the treble. The treble quality is tinny. Vocals are sometimes shouty, spitty, and echoey. I can't figure out what's going on, but these are starting to give me a headache after 10 minutes. 10 minutes is pretty good for an Ultrasone. There doesn't seem to be anything seriously wrong, but just enough moderate things wrong that build up over time.