the basic technology in them can be found in about any $150 1000w sub on
ebay, for their day they were way advanced, remember $600 15 years ago was like $1200 today, and they are really a great musical sub that take power, but saying you would be hardpressed to find a better 'sql' sub today is a far from true statement, there are plenty of subs out there today that sound just as good, but I really dont think OP bought it for that reason, when I look at his age it seems like he bought it for the reason I got one a few years back, I couldnt afford it when I was 16, and all my buddys were like holy ****, a stroker, lol