The Beyerdynamic headphones are 250ohms and I was looking at the Topping TP30 Amp/DAC and I'm trying to find out if this amp can power a set of 250ohm headphones. Both the headphones and amp/DAC come very highly recommended and are very affordable. I have little experience in headphone amps and exterior DACs and I would like some basic information about choosing an amp capable of driving these headphones. Thank you, any advice would be very much appreciated. The headphones: http://www.amazon.com/dp/B0011UB9CQ/ref=wl_it_dp_o_pC_n... The Amp/DAC: http://www.amazon.com/dp/B005D7SKWK/ref=wl_it_dp_o_pC_n... Ny help or suggestions would be completely appreciated, Thank You!