Etymotic at CES has upgraded its key iPhone and iPod earphones as well as its main Bluetooth headset. The hf3 replaces the hf2 and brings in a built-in three-button remote that gives full control over all remote-supporting iPhones and iPods. Both it as well as the new mc3 and mc5 sets use a unique approach that depends on low cost moving coil drivers but adds response shaping to boost the historically weak highs from these sources without diminishing bass.
