Sound quality is just great! The sound is crisp clear on all tones. I use those speakers for my home cinema and I am absolutely satisfied with the sound. They have more than enough volume for a home cinema and they are definitely overkill just for PC speakers. I use Bluetooth for connection.
What is not so good: 1) They don't have 3.5mm jack input, but they do have RCA input. Not sure how difficult it would be to add the standard 3.5mm input. 2) The remote control is quite complicated. I still don't understand why would they make 2 buttons for increasing and 2 buttons for decreasing volume? The remote itself is not convenient and not user friendly at all. They should fire the designer who created it. I often press the wrong button when I try to tune the volume. The buttons are too small and located too close to each other. 3) I connected my Yamaha synthesizer to them via RCA connector and wasn't very happy with that. First it's too quiet so I need to increase the volume on the speakers a lot and second it doesn't sound natural. 4) It would be nice to have some kind indication of the volume level on the speakers. You have no idea what volume they would be set on when you just turn them on and they can be VERY VERY LOUD.
So overall, they are great sound speakers (if connected digitally) with some complications.