Eleven Audio XIAUDIO 'Formula S' High Purity Headphone Amplifier (Open Box) audiophile The timeless elegance and depth

The timeless elegance and depth of black or the delicate refinement of a light

Crafted with prime materials and high attention to detail

Premium over-ear headphones with exceptional sound

Material Furukawa Copper with Silver Plated

Supercharged hearing

Eleven Audio XIAUDIO 'Formula S' High Purity Headphone Amplifier (Open Box) audiophile The timeless elegance and depthA newcomer shows the world the true sound of music. Solid state dual mono amplifiers deliver stunning speed and clarity, with hard hitting bass and drums and beautifully smooth tube like decay to cymbals and string instruments, on up beyond perception, the Formula S amp is tuned for the highest resolution music and headphones. Impeccable balance, smooth and clear to the source, excellent bass definition, simply put the dedicated headphone amp every