No hands-on experience with it, but it's said to be incredibly linear and perform "as expected". In a sealed alignment, I wouldn't expect too much 35hz and under, but who cares? //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
If ya hunt around, they can be pretty decent priced as well. They are well worth the dough, though. Best bet in shallows out there at the moment. Extremely musical, and put up numbers.