dB Technologies Opera Digital 402D 400watt, 12'' active PA speaker has 33% higher power output than its predecessor model, the OPERA 402 D delivers even more performance in an even lighter package. Set it up as a stand-alone fullrange enclosure or in combination with subwoofers; use it FOH or as a monitor. But whatever you choose to do with it, you will discover that the OPERA 402 D’s performance transforms the ordinary 12”/1” system into something extraordinary indeed.