Sound quality: Anker SoundCore's Motion Boom had Good overall sound quality - this model reproduces music and dialog reasonably well despite the obvious shortcomings in its sound. With the Custom EQ set for the most even tonal balance, bass has good impact, is slightly prominent, somewhat boomy, and deep bass is lacking. Midrange is a touch nasal, somewhat grainy, hazy and congested, and a bit soft. Treble is fairly extended but is a bit subdued and smeared. Does a so-so job of recovering room ambience and is somewhat congested. When two units are combined to form a stereo pair; its sound stage can be made wider depending on placement. Provides a decent volume level in a medium sized room, sounds strained at higher volumes.