Which headphone, 32,250 or 600 Ohm

I want to buy the Beyer Dynamic DT-880 but don't know which 1 to buy. Most of the time I will use it on my Yamaha A-S201 amplifier and occasionally on my smartphone or computer. Checked the Yamaha user manual but can't find anything about impedance of the phone connection. Any advice about impedance or better headphone for approx the same price is welcome.