, BLUETOOTH WIRELESS - Popular classic bookshelf speakers now can be enjoyed without the hassle of wires. Simply connection to an iPhone, Android, Tablet, PC or Mac. , STUDIO SOUND QUALITY - Naturally fine tuned sound reproduction from 4 inch bass and 13mm silk dome tweeter. , OPTICAL AND COAXIAL INPUTS - Digital inputs to enable lossless connection to most TV and computers. , REMOTE CONTROL - Adjust the volume and toggle inputs at your fingertips. Bass and treble control located on the side of main speaker.