Kicker has introduced its Amphitheater K3 Speaker System with Bluetooth ($200) and Vapor Headphones ($220). The Amphitheater K3 uses aptX audio coding and delivers sound using 3-inch drivers, mid-bass woofers, a tuned-port enclosure, and a 2x10-watt amp. Devices can connect to the Amphitheater K3 using NFC or Bluetooth. Kicker’s Vapor Headphones come equipped with a pair of 35mm dual-diaphragm transducers and sealing, leather ear pads. The headphones…