Audio-Technica ATH-M20x Professional Studio Monitor Headphones Deluxe Bundle Audio Technica M20x Bundled with High Sensitivity Headphone Microphone Critically acclaimed sonic performance praised by top audio engineers and pro audio reviewers Proprietary 45 mm large-aperture drivers with rare earth magnets and copper-clad aluminum wire voice coils Exceptional clarity throughout an extended frequency range, with deep, accurate bass response High Sensitivity Headphone Mic, 3 Mini Clips for Tidy Arrangement