Unwanted gift, new in box . This retails for £273, I found one that was reduced at £179.99 ( https://www.caraudiocentre.co.uk/product_m-sony-xs-aw81p5_p-20725.htm)

Sony active subwoofer system 200 watt max output
Compact subwoofer with built in amplifier
8" P5 Polypropylene cone for lower distortion and deeper bass
Remote controller for bass boost control from the dri ver's seat.

General

Speaker System Type car subwoofer;
Manufacturer: Sony

Speaker System

Series X
System Components subwoofer
Amplification Type active
Nominal Output Power 100 Watt
Max (RMS) Output Power 200 Watt
Frequency Response 50 - 200 Hz
Audio Amplifier integrated
Connectivity Technology wired
Controls subwoofer cut frequency, subwoofer volume control

Compatibility | Accessories

Type remote control

Audio System

Type subwoofer

Power Device

Power Source AC power adapter

Header

Brand Sony
Product Line Sony
Model XS-AW81P5

Speaker System Details

Speaker Type car subwoofer
Speaker Qty 1
Nominal (RMS) Output Power 100 Watt
Frequency Response 50 Hz
Connectivity Technology wired

Driver Details (1st speaker)

Speaker Type car subwoofer
Driver Type subwoofer driver
Driver Qty 1
Driver Diameter 7.87 m
Driver Diameter (metric) 200 mm
Driver Material polypropylene

Remote Control

Type remote control
Remote Control Technology cable

Connections

Type audio line-in, speakers input

Dimensions & Weight

Width 15.2 in
Height 12.2 in

Dimensions & Weight Details

Speaker Type car subwoofer
Width 15.2 in
Height 12.2 in

Battery / Power

Type none