Sound quality: Audio Pro's T3+ had Good overall sound quality - this model reproduces music and dialog reasonably well despite the obvious shortcomings in its sound. Bass has good impact and goes fairly deep, but is a bit prominent and boomy. Midrange is fairly even, but is somewhat grainy and a bit hazy. Treble is extended, but is somewhat smeared and dry, and a touch prominent and sizzly. Does a so-so job of recovering room ambience and is a bit congested. There is no significant difference between Bluetooth and aux sound quality. Provides a decent volume level in a medium sized room.