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Sennheiser IE 400PRO - Professional Stage In-Ear Headphones The Sennheiser IE 400PRO delivers clear, punchy, and distortion-free sound with transparent mid-range and crisp high frequencies, making it the perfect choice for professional musicians and audio engineers seeking studio-quality monitoring on stage. Key Features Newly developed dynamic 7mm wideband transducer for punchy, high-resolution monitoring sound Noticeable punch with transparent mid-range reproduction and clear high frequencies TrueResponse driver system reduces acoustic stress through homogeneous and distortion-free sound Ergonomic compact housing ensures high wearing comfort and secure fit Excellent noise isolation with optimised earpiece shape and flexible silicone and foam tips Durable cable design with innovative ducting and deep-set connector for stage use Product Overview The IE 400PRO features a miniature 7mm dynamic driver using Sennheiser's TrueResponse technology, guaranteeing artifact- and distortion-free sound even at high sound pressure levels. Its warm, punchy sound and transparent mid-range allow musicians to clearly perceive their performance without acoustic stress or resonance peaks. The distortion factor is optimised to an impressive 0.08%, ensuring clean audio reproduction during extended use. Designed for comfort and durability, the IE 400PRO comes with silicone and viscoelastic memory foam ear tips in multiple sizes for a customised fit. The robust cable with double-backed protection and innovative ducting withstands the rigours of professional stage use, providing reliable performance night after night. Specifications Impedance: 16 Ohms Frequency Response: 6 - 19,000 Hz Sound Pressure Level (SPL): 123 dB (1kHz / 1 Vrms) Total Harmonic Distortion (THD): Cable Length: 1.3 m Transducer Principle: Dynamic Weight: 18 g Attenuation: Up to 26 dB What's in the Box 1 x IE 400PRO In-Ear Headphones 3 x Silicone ear adapters (S, M, L) 3 x Foam ear adapters (S, M, L) 1 x Transport case 1 x Cleaning tool 1 x 6.3 mm jack adapter