The Audioengine 5 powered speaker system was Audioengine's flagship model and has become a er. The new A5+ has the same award-winning signature sound as the original A5 but includes customer-requested upgrades and features. Versatile With custom Kevlar woofers, silk dome tweeters, and hand-built cabinets, the Audioengine 5+ includes a remote control, dual audio inputs and enhanced thermal management. You can charge your iDevice via the USB power port and also add a subwoofer to the variable output. Connect Audioengine 5+ to your computer's headphone jack or pair with a USB DAC to achieve an even higher level of sound quality. The Audioengine 5+ works with any computer and there's no software to install or settings to change. Easy Setup Built-in power amplifiers save space and eliminate the need to connect Audioengine 5+ to a stereo receiver or external power amp. Simply plug the left speaker into an AC outlet and connect the included speaker wire from the left to right speaker. All internal components of the A5+ are tuned together, providing a more efficient system requiring less power than passive speakers and amplifiers. With superior stereo separation and incredible imaging, A5+ has a clear sonic advantage over boomboxes or all-in-one systems.