harman / kardon 3 piece set - Speakers and Subwoofer ?

Ideal for computers. a 3 piece speaker system made by Harman / kardon. 2 Stereo speakers and a sub woofer. Stereo input. All the cables included. Works off the mains power. Good condition. Works brilliantly. The knobs on the woofer control the woofer volume and treble. It is quite heavy. Buyer will need to collect.