I currently have a HD598 and a lowly FiiO E7 to drive it. Since I'm not concerned with portability, I'm looking for a serious amp/DAC for if, and another pair of headphones to listen to heavier types of music. I'm currently looking to save up for a Schiit Vali/Modi combo, but I'd like to hear some suggestions and opinions on that. With my HD598 Listening to soft music, especially with female vocals, had been heavenly. Like many said, heavier music types were not suited for them, so I'm looking for another set of headphones as well, preferably $200 and under. I'm currently looking at the Grado series, since I believe they're designed for the "in-your-face" kind of sound, but I'm not sure about the possible discomfort. I'm a guitarist for several years now, and though my knowledge on audio is still limited, whenever I set up my guitar amp, I prefer to run my heavier distortion with 8-10 on bass, 0-3 on mid, and 8-10 on treble, if that means anything in the area of headphones. Some bass is nice, but I don't really listen to dubstep or anything, but as long as I know it's there, and I can easily hear the all the difference instruments and sounds instead of a conglomerate that my HD598 struggles with heavier music.
Any help is appreciated, and thank you n advance.