Sony MDRV6 Studio Monitor Headphones with CCAW Voice Coil Posted: December 15th, 2015 — $109.99 A headset system designed for audio professionals. 40 mm drivers deliver accurate sound throughout the frequency range. Circum-aural design keeps ears comfortable. Reduces noise from the outside world. Copper-Clad Aluminum Wire (CCAW) Voice Coil enhances movement of PET diaphragm.