The Ultimate Personal Music SystemThe Audioengine HD Series was designed for the way people listen to music today and the HD3 Powered Speakers raise the bar and set a new standard for compact mini music systems. HD3s fit just about anywhere you listen and they were designed to play all your music from any device. Easy setup simple but useful features and real stereo sound make the HD3s the go-to system for all your music.Today's music is available from many different sources including computers tablets smartphones and turntables. The HD3 line is designed with multiple inputs to accommodate all these digital and analog sources. The Bluetooth receiver which supports aptX and AAC codecs has a range of about 100 feet so you can stream all your music from almost anywhere in your house. The USB input bypasses your computer's lower-quality DAC for a high-fidelity listening experience. Lastly dual analog inputs round out the HD3s' impressive suite of connections.FeaturesBuilt-in power amplifiersHigh-fidelity Bluetooth with aptX extended range and simplified setupUSB audio inputDual analog audio inputs and a full-range variable outputCustom Kevlar woofers and silk tweetersHand-built cabinets with furniture-grade finishesDetachable magnetic speaker grillsThreaded inserts to secure speakers to floorstandsVersatile ConnectivityIn the spirit of the HD Series Audioengine has included features from some of their best-selling products making the HD3s part of an incredibly versatile speaker system. Stream TIDAL Spotify Pandora YouTube - or any other streaming service or media player - wirelessly from your smartphone tablet or computer. You can also connect your favorite turntable and even connect a subwoofer so no matter how you listen to music HD3 has you covered.All Your Music Day and NightHD3s include a headphone output and volume control on the front panel so you can listen to your favorite music without disturbing the neighbors or your significant other.