I'd agree with garcianc2003 as a general rule. The layout of your room and the finishes will determine the magnitude of the impact from acoustical treatment (bass traps or other techniques). If you can accommodate acoustical treatment, that's the best place to start. For cases where you are limited in how much acoustical treatment you can do (such as a system like mine that is in the den and has to integrate with other functions), the SMS-1 offers an alternative that can do a lot to help without being intrusive.