HD650 headphones coupled to the DAC Asus Xonar Essence One. Excellent finish. Balanced audio spectrum sound soft and warm. Does not attack eardrums. Graves very deep and not as boomy many "boom boom" helmets, short, GRAVE OF TRUE. Warning, this is a product HiFi headphones, audiophile. Its 300-ohm impedance requires you to connect to a specific amp into high. Do not expect to be an improvement by connecting it to your iPod, iPhone or other. Your player will not be able to properly feed it (impedance) and more, your MP3 will mush. This headset requires HiFi source. Excellent service from Amazon for their seriousness. Processing and shipping on the same day the order !!!
