Introducing authentic audiophile performance in a Bluetooth wireless speaker dock. Sound Stack brings music to life and delivers exceptional sound for movies, TV shows, videos, games, Internet radio and apps from any compatible Bluetooth device (including iPad, iPhone, iPod touch, Android and Blackberry devices) from up to 33 feet away. Sound Stack is acoustically balanced to complement every genre at any volume with vocal clarity, natural bass and stereo separation featuring UQ3 spatial enhancement. Crafted to capture every note, Sound Stack achieves audiophile quality with four custom-engineered, Kevlar-reinforced balanced drivers. DubSub technology pairs two subwoofers in a proprietary push-pull configuration to create deep bass that maintains clarity and tone. Sound Stack will also dock and charge iPod, iPhone and iPad devices - even if they are in a case. Includes USB power port for charging additional devices, digital optical audio input, Bluetooth lossless streaming of AAC files with iOS devices, internal FM tuner accessed through Soundfreaqs Remote App for iOS or Android, and remote control.