dt1770

Consider to Upgrade my DT770. I also have Grado 225E Current candidates are DT 1990/DT1770/Amiron. Listening to all kinds of music Have read a lot on internet. + youtube Dt1990 too analytic? DT 1770 is a better chose for Music listening? Amiron are more smooth? And the best Choice? Amiron altso...

Im considering to buy the amplifier Pioneer A-30 for my speakers. I have not a headphone amplifier to pair with my Beyerdynamic dt 1770 pro. These headphones have 250 ohms impedance, which isnt low and an amplifier. I dont want to spend a lot of money, cause I have just bought Topping D-50 (DAC)...