FiiO FD1 Hi-Res Earphone Wired,Beryllium-Plated 1DD,4-Stranded High-Purity Monocrystalline Copper, 0.78pin,Strong Bass (Without Mic,Black)

KEY FEATURES Flagship-grade beryllium-plated diaphragm driver: With FiiO's typical flagship-grade headphone technology, the FD1 headphone dynamic driver is made of high-end beryllium, known for being light, thin yet extremely rigid. It brings you a sense of movement and power, shaping majestic sound performances. That means 4 times more rigid than steel, three fourth lighter than titanium,and sound velocity up to 12KM/s.Extraordinary configuration just perfectly matches with you Two-way magnetic circuit design,powerful driven capacity: The FD1 earphone dynamic driver is designed with an N50 two-way magnetic circuit having a 55% magnetic flux promotion and nearly 1 Tesla of magnetic field intensity compared with the traditional single magnetic circuit. The double magnetic flux activates forceful driven capacities that enable energetic, robust bass performances and even full and delightful transient responses Patented balanced pressure relief technology,for long-time wearing: The beryll