This Focal ISUB Active sub provides a premium-quality Sub-Woofer and 2-channel amplifier in one integrated package. The Focal ISUB Active 2.1 provides the perfect accompaniment to a high-end speaker upgrade to the maximise the sound potential in your Land Rover Defender audio install. 

Focal subwoofer with built in amplifier.

Supplied with wiring loom.

Focal part number: ISUBACTIVE2.1

Resources section below for the full specification.