2009 yaris-s sedan headunit compatible with amp and sub?

[AdeJong 03]

Hey guys I am looking into getting just an amp and sub for my car because i really like my stock head unit.

I was wondering, does the headunit I have from the upgraded S package have pre-outs to wire in an amp and sub?

this is the headunit in question

http://l.yimg.com/dv/izp/toyota_yaris_sedan_s_4_spd_at_2009_dashboard_dashb oard.jpg

thanks!