MULTIPLE INTERFACES - Speakers with Bluetooth/Coaxial/Optical/Line input. Bookshelf speakers bluetooth wireless with more faster transmission and lower latency. STEREO SPEAKERS - For pc speakers to desktop, there's treble and bass dial suitable for desktop computer or laptop, and with the built in DSP to achieve unmatched fidelity. HOME AUDIO SPEAKERS - 4” mid-bass can get down to 62Hz; soft dome tweeter made from silk-diaphragm can get up to 20kHz. ACTIVE POWERED BOOKSHELF SPEAKERS - Accurate acoustic design with modern stylish frosted irregular front baffle and cuboid vented tubes greatly reduce diffractions and makes the sound clearer. EASY CONTROL - 3 Knobs on the side panel allow users to adjust the treble/bass ±3 as well as volume; remote control also available, easy to operate.