I purchased this unit to replace tinny sounding wireless speakers that either produced distorted bass or some sound frequencies appears to have been omitted. As soon as I turned the unit on, on thing definitely stood out - the sound produced has depth, I can only describe it as a kind of 3D for sound. It plays all audible sound frequencies very well across the board, with a good tone balance realistic to an original recording. This is what sets Bose apart from the rest, it is meant for one to hear the music as a whole, but if pure bass is what you want, this isn't for you, although not window vibrating, it can play pure bass sound for a small area. The reason for 4/5 stars is the fact that the bass tone of the unit does change depending on how it's placed, something I expected all Bose products to have resolved. But even with the tone loss, it's still minimal for those who like to hear the full range of music. Want a kick to the bass sound? Situate the unit close but not against a wall, not in an enclosure. You'd be surprised what a small wireless Bose speaker can do! Overall, this is a great sounding unit, I'm looking with interest to see how Bose improves sound with a limited amount of space within the unit. I will recommend this product to all my friends and family, and I have already posted my reviews on my facebook page too!
El Monte, CA