Hi there,
I have BassPulse speakers which are very good (http://www.amazon.co.uk/video-games/dp/B00NVPR6FI/ref=sr_1_sc_1?ie=UTF8&qid=1432392398&sr=8-1-spell&keywords=bassepulse).
When the aux is plugged into my ipod the sound is like 50% more strong and loud than when plugged into my my pc...