The low end is very natural, the highs are airy and smooth, and overall the sound is focused and three‑dimensional. There's a great sense of separation between the component parts of a mix, with an awesome impression of front‑to‑back perspective.
One of the additional great features is the ability to fine tune the low and high frequency responce (and even the tweeter level!) with the controls on the back of each speaker. You may find it useful if the acoustic conditions of your room are not perfect.
Overall these are excellent nearfield monitors at their price point. Highly recommended!