Sound quality: AudioEngine's HD3 had good sound quality overall. Bass has decent impact, is somewhat subdued, and deep bass is lacking. Midrange is a bit thin, grainy and hazy. Treble is somewhat prominent, smeared and upper treble is subdued. Does a so-so job of recovering room ambience, sounds a bit congested, and lacks fine detail, No significant difference between Bluetooth and wired sound quality. Provides a decent volume level in a medium to large sized room. Because these are two separate speakers they can be placed to provide better stereo separation than many other models.
Ease of use: We found the AudioEngine HD3 ease of use to be good overall. Bluetooth pairing is excellent where the unit is always in pairing mode when not already paired, shows a pairing mode indicator. Indicates when pairing mode has occurred and never times out. The volume control is good although it is an unlabeled multifunction knob which has a tactile indicator when max volume is reached. Switching between sources allows simultaneous playback from Bluetooth and aux inputs. Have to turn off audio from source so no overlap. Unambiguous.
