Hifiman EF2C usb dac, tube/ hybrid headphone amp. Nice upgrade from the previous EF2a. Build quality of this usb dac is improved and now with a stepped volume control. For most people playing itunes, mp3 or lossless, cd quality music, this is a nice way to upgrade your computer audio to a set of full size headphones. It connects by the included usb cable, requires no drivers and with the tubes in the input stage, you have the option of upgrading the tubes for a fairly affordable cost.
Very good service from Headphone bar. I will biy again from them for sure. Excellent price! The HifiMan EF2C is a pretty good headphone amp if you use the rca input. The DAC input is ok but not that good if you an audiophile.