Both as a headphone amplifier as well as the DAC convinced Fiio E17. I use the E17 mainly as DAC on my PC if I use headphones as the PC built Asus Xonar DX not really satisfied in combination with high-quality headphones provides me with regard to sound. The Xonar DX tends me to distortions in the sound making with the appropriate equipment (high-quality headphones with high resolution at high frequencies) in very unpleasant heights noticeable. That's why I've bought the Fiio E17, a good decision, because the purchase was worth it. The E17 offers sound exactly what it should do a good DAC, it converts the digital signal (use it via USB) in an exact as possible analogue copy to without distorting the sound or to swallow details. The result is a detailed sound - assuming corresponding quality recordings - will find at the even the pickiest ears nothing wrong with audiophile aspirations. Power has the E17 also more than enough, my Beyerdynamics DT operates 990 Pro Headphones (250Ohm Version) the E17 easily. And even if I hear very loud music, the E17 still abundant reserves upwards. "Very loud" with the DT 990 requires only about 50% of what is to afford the E17 capable.
Processing looks wertig from even if it is "Made in China". What you do not really see in the picture that is the E17 Metal (think it's aluminum'm not sure) is manufactured and also relatively heavy in the hand is what the quality impression reinforced. Accessories is convenient but not outstanding, so only the most necessary of cables (Digital cable not included) and a not particularly wertig-looking protective case are included. Especially the instructions supplied leaves some to be desired. Charging is done via the included USB cable.
Due to its excellent sound and wertig sounding processing at a fair price, there is a strong buy recommendation from me and 5 star. Interested buyers should, however, be aware that it is worth also useful requires headphones so that the purchase actually. What matters in the ears at the end always determined by the weakest link in the signal chain, with 20 headphones and mp3 files 128KB it does not need a DAC for about 100th