Bought new and never used apart from to test that it works. This is a well regarded sub that has an amplifier built in and comes with the wiring. You just need to extend the remote wire and plug in some RCA leads. It can also take an input feed from the speakers. It’s a 12 inch sub in a suited ported box which provides both deep and punchy bass. Easy to install and has gain control, bass boost and frequency control. Collection from the Docklands East London but delivery can possibly be arranged.
eBay