Signature Master is designed as a monitoring reference for the most demanding recording studios. With a 40 mm titanium-mylar diaphragm, it delivers similar fidelity to the well-known reference headphones in the Edition series. Ultrasone's S-Logic 3 natural surround sound and ULE (Ultra-Low Emission) radiation reduction technologies contribute to a comfortable and safe listening experience. Made from merino sheepskin and durable plastic with gold nameplate, the headphones are designed to meet the needs of long-term thinking audiophiles.