MA750i: Noise isolating, premium, in-ear headphone with remote and microphone Using RHA's Aerophonic™ design, the MA750i is constructed from individually machined stainless steel components. The handmade driver (model 560.1) and over-ear fit ensure remarkable sound reproduction and a comfortable, noise isolating fit. High-Res Audio certifiedThe MA750i in-ear headphone conforms to Hi-Res Audio standards as defined by Japan Audio Society. This logo is used under license from Japan Audio Society. Precise, balanced and articulate sound reproduction with a great depth of soundstageThe RHA 560 series of drivers has been designed to deliver a clear and natural sound. With high levels of spatial separation and distance, they are capable of reproducing audio with exceptional power and precision. Over-ear cable supportsThe MA750i features contoured, over-ear cable supports designed to hold the headphones in position with the cable running behind and over the ear. The cable supports offer a more comfortable, secure fit and help deliver effective noise isolation. Features Handmade driver (model 560.1) for precise, balanced and articulate sound reproduction with a great depth of soundstage. Noise isolating design. 303F grade stainless steel construction. Remote and Microphone 3-button remote and microphone for use with compatible Apple devices. Selection of Tips Selection of dual density silicone, double flange silicone and memory foam ear tips. Steel reinforced, oxygen-free cable with gold plated connection. Ear Hook Contoured over-ear cable supports. Hard Case Premium carry case and stainless steel ear tip holder. What's in the box MA750i in-ear headphone 6 pairs, dual density ear tips - S x2 / M x2 / L x2 2 pairs, double flange ear tips - S x1 / L x1 2 pairs, memory foam ear tips Stainless steel ear tip holder Premium carry case Clothing clip Specifications Drivers Handmade Dynamic (model 560.1) Frequency range 16-40,000Hz Impedance 16 Ohm Sensitivity 100db Rated/max power 1/5mW Weight 36g Cable 1.35m, reinforced, OFC Connections 3.5mm, gold plated