Excellent sound amplifier, arguably the best for its price. Original price is around 750﷼ to 1000﷼. Mine has no issues, light use, and works like new. Asking price starting from 500﷼. Why get an AMP? You get it for professional headphone use. I haven't used it before, and of course, you can power headphones that require high ohms, such as the very famous DT 770 pro headphones, and the well-known DT 990. Of course, if you have one of these headphones without an amplifier, you are losing half the quality of the headphones. So get an amplifier to optimize your setup.