Once again Marco De Virgiliis with his pioneering soul has managed to create this new series of products which has really nailed the tone and power versus portability issue. This series is a further example of how Markbass is always one step ahead in innovating using state-of-the-art technologies. The MB58R 104 P features 4x10" Markbass classic ceramic speakers and a new piezo tweeter. The P series is created for those who like classic speakers but don’t want to carry heavy stuff, thanks to the revolutionary material used for the cabinet enclosure, the MB58R 104 P weighs only 21.3 kg!