Inheriting the basic performance of Fostex monitor headphones from the predecessor models TH-7B and TH-7W, the new TH7 series have been modified and tuned in a closed back design with four new color variations. The new closed back housing offers superb sound insulation and combined with the high quality 40mm diaphragm, you'll experience dynamic, rich lows with delicate, natural highs. The high grade leatherette ear pads will reduce the stress of long time listening - go ahead and lose track of time!