The Audioengine +2 has a built-in DAC and amplifier. I am not familiar with other powered computer speakers.
The Audioengine +2 left speaker has the power supply. This plugs into AC using an adapter which comes with the speakers.
Connecting the USB cord which is packaged with the speakers, from your computer to the left speaker, enables the music to run through the +2's built-in DAC.
The Audioengine +2 left speaker has the power supply. This plugs into AC using an adapter which comes with the speakers.
Connecting the USB cord which is packaged with the speakers, from your computer to the left speaker, enables the music to run through the +2's built-in DAC.