The AKG K812 Superior Reference Headphones carry 53mm transducers – the largest transducers AKG has ever applied. With the 1.5 Tesla Magnet System and an ultra-lightweight two-layer voice coil, these headphones deliver an accurate imaging and pure, natural sound. The K812 was also designed for long mixing or listening sessions: An open mesh headband and 3D-shaped slow retention ear pads ensure maximum comfort that will let you forget that you have the K812 on your head.