Audio Technica ATH-M50X-BL Headphones Blue w/ Headphone Amp Includes a Headphone Amp! Special edition blue color, with tan handband and earpads 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