AudioFly - AF120 Hybrid Dual Driver Universal In-Ear Monitors - Roadie Black Designed for professional and personal hi-fi listening Hybrid Dual Drivers: . Each side features a balanced armature driver and a 9mm dynamic driver. They are built with an internal crossover to provide a flat frequency response and warm tone AudioflexTM SL Cable: Low profile for use on stage and being concealed For comfort, the monitors include three different sizes of Comply foam and silicone single-flange and tri-flange replacement tips that accommodate a variety of different shaped ears and user preferences The in-ear monitors come with a durable storage wallet, a 1/4" adapter, an airline adapter, a shirt clip, and a cleaning too