cavo ottico performance optical quartz qedOVERVIEW: The Reference Optical Quartz cable uses the new QED GLASSCORE technology, a conductor composed of very numerous and very thin optical fibers that allow the signal to flow homogeneously and without distortion. This feature makes it ideal for connecting high quality components even in situations where the cable is bent for installation reasons USE IT FOR: TV stereo amplifier Blu ray player AV Receiver DVD player DAC CD player Digital set top