Hi Fi, Low Impedance Following the success of the LCD-2 and LCD-3 headphones, Audeze set out to develop a planar magnetic that uses a thinner and lighter transducer. The result is the LCD-X, a headphone thats so smooth, so responsive, and so extended in its frequency response that they made Zeos Reviews proclaim: "everything is garbage compared to these. You should drop everything and...figure out how to afford some LCD-Xs." The overall tonality of the LCD-X is neutral, making it a great option