No warm low end, even with the bass boost switch on.

The response is near flat to my ear (a good thing if you're looking for studio monitors vs. digitally over-processed sound-field speakers), perhaps a bit too flat (or in the negative) on the top end, which is my only significant sonic complaint: for clarity, they need a slight bit more crispness in the high end for vocals or instruments with a lot of high overtones, though this can be overcompensated for if you're using an amplifier or a smart device with an equalizer

The book states that you can hook up a sub-woofer to get a better low -end experience.

Producing a decent bass and keeping the high end crisp, these will overpower your laptop and monitor