The SB43 is a highly efficient full range with both an impressive transient response and glossy smooth high frequencies. It's the little brother to the BB83, 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, all in a compact box, this is the full range for you!