Audio-Technica ATH-T300 Closed-Back Dynamic Monitor Headphones with CCAW Coil - Black (Discontinued by Manufacturer) 40 mm drivers for smooth low-end response and high-end clarity Copper-clad aluminum wire (CCAW) voice coil delivers extended high frequency range and cleaner bass Adjustable double headband for long-wearing comfort Specially designed support system reduces pressure for extended listening comfort Plush over-the-ear earpads minimize sound leakage