Updated August 15, 2011: We’ve now tested the Revamp and found it to be identical in performance to Remix Vocal, the $90 one-button remote version, only with cosmetic differences. Revamp’s ear housings have more detailed logos on the sides, including Japanese characters, and slightly simpler metal barrels with reduced faceting and less of the second accent color—here, red rather than silver or black. The remote control unit is a…