The Sennheiser IE4 Earphones are high-fidelity in-ear monitors designed for professional audio monitoring and personal listening. They deliver clear, detailed sound with deep bass and precise mids, making them ideal for musicians, audio engineers, and audiophiles. Key Features: High-fidelity sound with detailed mids and deep bass Ergonomic in-ear design for comfort and secure fit Durable cable with robust strain relief for long-lasting use Included multiple ear adapters to ensure proper fit and isolation Frequency response: 20Hz-18kHz for full-range audio reproduction