The speakers!!
Surely you must have noticed them?
Oh those yeah. Eltax Millennium 500's, not the best speakers for clarity but for pure house party style bass and noise they work a treat.
Heres a glam shot with the covers off


Can just about see the amp to the left, Yamaha DSP-AX861, chucks out plenty of wattage in stereo, although I'm tempted to invest in a more musical processor soon.