The S-LogicEX technology also achieves the same perceived volume with significantly lower sound pressure, which allows for longer periods of listening without fatigue. The Edition 15 features patented Ultra-Low Emission (ULE) technology, which utilizes MU-metal shielding to protect against electromagnetic radiation.

Remarkable materials of construction include Merino leather, stainless steel covers, and earcups made from cherry wood, a material often used in instrument manufacturing due to its pleasing resonance. The microvelour ear cushions are secured to the earcups by magnetic force and can be reliably and easily detached. The Gold Titanium Compound (GTC) technology combines a gold foil membrane with a titanium dome to deliver high-quality sound performance with detail and transparency.

Three cables are included, and they all use LEMO push-pull connectors that provide a secure connection between the earcup and the audio source. One 9.8′ 4-core connection cable terminates with a gold-plated 3.5mm stereo plug, while the second cable features a 13.1′ 4-core cable with a 1/4″ Neutrik plug. A 3.9′ 4-core cable with a gold-plated 3.5mm stereo plug is also included. The Edition 15 ships with a genuine leather box.