My old Logitech V10 USB speaker set (without subwoofer) broke after seven years of faithful service. Then I spent months looking for a comparable set and I absolutely wanted a USB connection again. There aren't many anymore. I tried HP and Trust, but they didn't live up to my expectation at all. Tiny sound, no nuance, no bass.
Decided to buy speakers with mains power, that had to be Logitech. Good choice, it turns out, because these are by far the best speakers I've had in the house in recent months.
Nice full stereo sound, sufficient bass, well-tuned highs.
Volume adjustable on one of the speakers, connection for headphones and an additional connection for an external sound carrier (e.g. smartphone or MP3 player). The design is modern and the dimensions are just not too large (they are connected to the laptop on the table).
An absolute must for this price!