Finnish company Gradient is known for its unusual-looking speakers (they have a model that always reminds me of one of those ergonomically-designed office chairs), and unconventional—but effective—approach to bass response. At SSI 2013, they introduced an interesting new small speaker, the Gradient 5.0 ($2000/pair), which features the same coincident mid-tweeter driver used in their larger speakers, and a passive radiator for the bass that looks like a mini-version of the famed KEF B139 woofer.