Sound quality: Sony's XE300 had Good overall sound quality - this model reproduces music and dialog reasonably well despite the obvious shortcomings in its sound. Bass has good impact but is somewhat tubby and a bit prominent, and the deepest bass is lacking. Midrange is fairly even but is somewhat muffled and a bit dark, grainy and plasticky. Treble is fairly extended is a bit smeared and a touch sizzly and the lower to mid treble is somewhat subdued. Does a so-so job of recovering room ambience, sounds somewhat congested. The speaker can be set for stereo or mono operation using the Sony Music Center app; changing the speaker setting from stereo to mono did not significantly change the sound. Provides a decent volume level in a medium sized room. When two units are combined to form a stereo pair the sound field can be made wider depending on placement.