After 10 years of listening to sub-par quality equipment (computer on-board sound connected to computer speakers), recently (last week!) bought a Schiit Modi DAC and Grado SR80i headphones. The sound is incredible even through my 20-year-old amp, but I'm wondering if I made a mistake with my headphone selection. I listen at low volumes, but my ears still get fatigued quickly (15 to 45 minutes). A qualifier: my ears are super-sensitive, I literally cover my ears when I hear vacuum cleaners, sirens, etc. Second, while the mids and highs are gorgeous, I find a lack of lushness/ reverb as well as the low end not being as impressive as I would like.
I read extensively on this site that Grados are known for their mid and hi frequency, and that lows are not their forte. Should I consider returning the Grados and go for my second choice: AudioTechnica ATH-M50, or perhaps something else? My budget is $125 maximum, so if this is the best I can afford, that fine.