The BB83 is a monstrously efficient full range with both an immense transient response and glossy smooth high frequencies. It's the big brother to the SB43, using the same 3" full range driver. This 3" driver has a highly linear stroke and impressively precise suspension control while still having the power to drive a large horn. If you're after the Buried Audio non-fatiguing smooth high end, and the warm, enveloping midrange, this is the full range for you!