The astounding aesthetic of the bronze reflex ports on the SPECIAL EDITION version underlines the incredible value of this series . The ACTION series is already renowned for its great sound and design elegance. The ACTION SE takes that one step further. The advanced performance reflex ports, which are machined in solid bronze, really lift this sound centre to a new level. The sound tone is enhanced and the design effect is extraordinary. ACTION SE is remarkable even when it is switched off. It is never silent!
 
Know more about STEENSSEN ARSA 3D sound from here - FAQ search 'ARSA'.