The SubLine 118SA is a compact ACTIVE sub weighing just 44.5Kg .Yet delivers amazing punch. The built in amplifier delivers an amazing 2400Watts (Peak) thats an astonishing 137dB SPL from the 18", 3" Voice coil driver with incredible input flexibility with 2.1 option and powercon TRUE1 in and out . This great combination is manufactured using baltic birch plywood cabinet, 100% made in Italy .