Bought speakers about a year and a half ago. Works with Yamaha A-S300 amplifier and Creative sound blaster z sound card. Happy with the purchase so far. With many hours of daily listening to music cope with a bang. Someone here wrote that they are not suitable for rock - I absolutely disagree. The genre mainly plays psychedelic, experimental and hard rock, funk, sometimes metal, I can not say that it is not suitable for playing something, for me, because the speakers are quite "omnivorous". An excellent bottom, you enjoy the sound of the bass guitar, a clear middle, everything is fine with the tops too, they do not get out of the range. I advise you not to skimp on a good sound card, the sound changes significantly. The build quality is also good. Yes, there are swelling around the speakers, but it does not bother me. Due to not very good stability, especially on uneven old parquet, one of the speakers fell a couple of times, once hitting the wall very well, but this did not affect the sound in any way, only the corner was scratched. In general - I highly recommend to all music lovers, the speakers are excellent, powerful, they easily pump the whole apartment (60 sq. M.) in case of a party.