The Final Audio Design SONOROUS X is equipped with BAM technology (Balanced Air Movement). A BAM mechanism developed for balanced armature drivers has been employed with a dynamic driver. With BAM, the idea is to optimize the pressure balance between the front and back of the diaphragm. Large drivers machined from pure aluminium are equipped with titanium diaphragms and housed in stainless steel making this headphone the pinnacle of the SONOROUS series with vibration free and clear sound. The Final Audio Design SONOROUS X has detachable cable and 3.5mm diameter gold-plated monaural plug. The cable has a 90-degree rotary locking mechanism. It comes with comfortable fit and optimal "suppleness" ear pads. Specifications: Housing: Stainless steel/Aluminum, Driver: 50mm diameter dynamic, Sensitivity: 105dB, Impedance: 16 Ohms, Cord length: 1.5m. Accessories: Detachable cable with locking mechanism (3m/1.5m), Stainless steel warranty card with serial number and license key.