Bought this to replace my old MHC-RG330 which has sadly got passed its best & suffering many problems due to age. for all this system is as equal or higher in power output the sound quality for all is nice is not as good as my old system, mainly I think due to the speakers with this unit, my old system had speakers with dual hybrid woofer which I plan to keep & maybe try connecting up after warranty expires on this system to see what if any difference it makes as with this system it has not got the same bass power as my old system, my old system would shake the house down, this 1 is hardly even room shaker even at high volume which I'm sure is at least partly due to the speakers, also sometimes with some types of music I have to turn mega bass off as I get a distortion almost sounding as if sound is fluctuating in 1 or sometimes both speakers which I think is due to the speakers not being able to handle the bass of all types of music, all in all it has some nice features such as usb playback & wifi playback