The Earin headphones have an MSRP of $250 (and can currently only be found at Best Buy for $300) and the Kanoa in-ear buds ship in April and will sell for $300, though right now you can pick up a ...

SAN FRANCISCO — Behind Kanoa’s slick promotional photos and videos, lofty promises to revolutionize music listening, and countless reassurances to customers, the warning signs were there ...