If you are picky about your sound, buy one of the Revel sound systems. The factory amp is not very good. I replaced the stock speakers in our MKX with much higher quality speakers and it sounds much better than stock, but I have to be honest - it is lacking. The sub in the back is nearly non-existent. It is just not up to the level of either Revel, or the Sony that we had in our Edge that we traded for our MKX. It is fine for general listening - sure. If you like good sound, buy one that has good sound.