Quality Yamaha active sub in good condition - working well, producing powerful, well extended bass. A great upgrade for your Hi-Fi or home cinema system. I know this line of subs are also popular for studio use with the Yamaha NS10 monitors and other small monitors.
You are welcome to come and check this out and collect in person, I am a brick and mortar Hi-Fi and audio dealer based in Teignmouth, South Devon. You can find more info on my shop via all Google etc.
If you need this posted, to ensure safe transit this will be very well packed in a large box with plenty of bubblewrap etc, and sent with adequate insurance against loss or damage. It's a very heavy item at 25kg so postage cost reflects both the hassle to pack up and the actual cost.