wen i got this stereo i was amazed,realy rich bass and super clear midrangebut unfortately a mouse crawled insidethe bass port in the back and chewedup one of my subwoofers.i cant find a replacement,not even panasonic couldreplace it.i added a 10 inch kenwood subwooferon the right channel.and it now sounds even better than before.if you plan on replacing your woofes with biggerbetter ones make sure they are 140 wattsand 6ohms or else you will blow up your stereo.