Pure Diamond Diaphragm for Exceptionally Low DistortionThe C (Carbon) IEM is unique. Lab grown diamond meets Neil Diamond. The ultimate statement in resolution, with distortion below any other IEM we know of. Transparency starts and stops with C. Enough fun built in to make listening to any style a joy but revealing enough to hear any detail buried in the mix.C utilizes a lab-grown diamond layer (8 microns) on our own proprietary high-temperature polymer substrate. All components inside our IEMs were 100% designed and tooled in-house, resulting in a totally unique product.The sonic signature of C is an interesting mix of Ti and Be, with the enhanced bass response of Ti but the high-end extension of Be. Due to the very high Young’s modulus (a measure of stiffness) and internal speed of sound, C’s diaphragm moves homogenously with no lag across the surface. It resists bending and distortion better than any metal, but is lighter than most metals.All our IEMs feature Eastman Tritan™ bodies for high strength and zero resonance, custom front-and-rear tuned volumes, butyl rubber strain reliefs, chemically etched grade 316 stainless steel grilles, and N48H grade magnets. And bonded together and sealed in precision alignment with cyanoacrylate and polyvinyl acetate adhesives.Every IEM set comes with a full set of accessories. We manufacture our own earbuds from medical grade silicones and urethanes, and we include small, medium, and large sizes of single flange, dual flange and foam units. We stamp our own screw-top carry tin sized to fit inside the coin pocket of a pair of your favorite jeans. And you’ll get adapters that let you use your IEMs with any equipment, whether at home (the 1/4″ gold plated adapter jack) or on the go (the lightweight, gold plated airplane adapter).PERFORMANCE MEASUREMENTSFrequency Response: 12 Hz to 38 kHzImpedance: 32 Ohms nominalSensitivity: 98 dB SPL at 1mW in earPower Handling: 200 mW continuousPeak SPL: 121 dBTHD: Less than 0.2% THD at 1mWINCLUDED IN THE BOXC IEMs (matched pair)1.2 meter long cable single 3.5mm TRS to dual 2.5mm TS jack and metal shellsCarrying CaseSingle Flange Tips – Small, Medium, LargeDual Flange Tips – Small, Medium, LargeMemory Foam Tips – Small, Medium, LargeProtective Travel CaseGold Plated ¼” TRS Adapter JackGold Plated Dual Mono Airplane Adapter