Adding a subwoofer to a standard 2014 VW Polo 1.2 TSI

[Sireatalot]

Morning all.

I've recently picked up a 64 plate 1.2 litre TSI 90ps 3 door Polo.

Whilst I'm impressed with the sound quality of the standard 6x speaker stereo system, I'd like a little more bass.

I don't want the hassle of having to replace the head unit as it is 'plumbed' in with the rest of cars on board computers / steering wheel controls etc... but does anyone know if adding a small sub to the standard head unit is possible ?

I already have a sub with attached amp for boot ( from my previous car) but really just need to know whether or not the standard head unit has the AUX output RCA connections available?

I thought I'd ask on here first before going back to VW dealership.

Thanks in advance.
Dom