In any IEM, sonic performance starts at the materials. In the OH10 IEM from IKKO, the materials hit all the marks. Outfitted with dual titanium drivers—a Knowles 33518 balanced armature and a 10-millimetre dynamic driver—each earbud delivers precise and powerful audio with impressive transient response. In addition to resisting distortion from unwanted driver vibrations, ultra-strong titanium also provides a durable coating on the outside of each earphone’s chamber. Between these two titanium appearances, platinum-coated copper cavities optimize acoustic performance by reducing internal harmonic resonance. Tying the OH10 together, a high-purity OFC silver-plated cable ensures high-frequency extension and low-frequency presence on any signal.