1. Special design for AIVN AUDIO with Sub Out, like IT502/IT602 to be 2.1CH speaker system 2. High-performance SPK 3. Great power AMP 3. Mini neat design for easy placement 4. Aluminum speaker box / piano finish painting Specification: Component Size:6''''''''? Output Power:70W Frequency Range:38Hz~300Hz AC (230V 50HZ)