ANSDEN KAL520-3 Home Theater Living Room TV Audio Echo Wall 5.1 Wireless Subwoofer 3D Surround Wall-mounted Bluetooth Speaker Set. 13 Speakers, Wireless turbo bass, Wireless crossover surround, 40Hz overweight dive, Ti power amplifier, 5.8G anti-interference wireless, All wooden sound, Virtual 5.1 surround, DSP digital sound effect, Touch screen display, Coaxial/Optical fiber input interface.