Huge Sound, Small Size Audioengine 5 is a full-size speaker system in a bookshelf-sized package. Internal power amps eliminate the need to connect the Audioengine 5 to a bulky stereo receiver or power amplifier. And with built-in subwoofer ports, the Audioengine 5 adds incredible low-end bass without the need for an external subwoofer. Airport Express Power With an AC power jack in the rear panel, the Audioengine 5 provides the ability laptop directly to the speakers through Apple's Airport E