I decided to buy this product because it was well noted (good quality / price ratio) especially at this price. It is certain that the bass is very present, but it is possible to set all this via the knobs high / low present on the satellite. But no On / Off button and what is abnormal !! Forced to crawl to turn the system (otherwise there remains a slight hum), it's anything !! If I had read a comment on this point, I would never have bought this system there (and that's a shame because this set is very good)! So: ITEM TO IMPROVE gentlemen!