Brand new in box. These are powered/active speakers. No additional equipment is required to operate.

Features & details
BLUETOOTH 5.0 - Pair the speaker with your smartphone, tablet, Mac, or laptop to play music wirelessly, no need to deal with messy wires.
SUB OUT AND OPT/COAX INPUTS - Subwoofer output with automatic detection and built-in crossover. Optical and coaxial inputs to ensure a lossless connection to TVs and computers.
DISTORTION-FREE SOUND - Fill your room with beautiful sound with its 42W continuous undistorted power, 13mm silk dome tweeter unit, and 4-inch sub-woofer unit. Enhance your listening experience with Soundfield Spatializer.
UPDATED REMOTE CONTROL - Wireless remote for easy control of volume, mute/unmute, switch to OPT/COAX mode, line-in, and Bluetooth modes. Bass, treble, and volume control located on the side panel.