Reply to Traktor S4 Audio Output

I've had my S4 for a few months now and this may be a stupid question but is it possible to hook up 2 different speakers sets to it? Ive only ever used the main audio output but there are 2 others on there so im wondering what theyre used for? I'm DJing a tailgate for a football game in Miami and itd be pretty sweet to be able to hook up a few speakers to my controller. Thanks in advance guys