Never ending innovation coming from SoundMagic with the upgraded 2017 edition PL30+C IEM earphones. As their predecessor, the new PL30+C earphones retain their balanced and inspiring sound together with tunable sound signature, but now with metal elements to make these special earphones even more durable and a hint more attractive. Using carefully tuned dynamic drivers that are placed in the metal housing the SoundMagic PL30+C transmits music as it is intended to be heard. The sturdy metal earphone body of the PL30+C also incorporates a convenient bass control dial to fine-tune low frequencies to suit individual tastes. Professional over-the-ear cabling ensures best fit and decreases microphonic noise travelling up the cable. Optional ear guides included with the PL30+C ensure the earphones stay in the ear no matter what the situation. Various sizes of ear tips make sure the PL30+C create an airtight seal in the ear canal for best sound isolation.