Experience the unrivaled audio quality of our Flagship LCD-4 without the need for an amplifier. No other headphone in the world features such a robust and musically engaging sound signature in such an efficient package. With an impedance rating of just 15 ohms, the LCD-4z can be driven straight from the Aux port of your favorite listening device. If that’s not enough, our cast-magnesium housing yields a design that is lighter-weight than our standard LCD-4, making the 4z well-suited for extended listening sessions. Our Double Fluxor™ Magnetic Array set the record as the most powerful open magnetic circuit ever created, ensuring that our Flagship drivers can reproduce any audio signal with unrivaled accuracy and power.The Nano-scale diaphragms used in the LCD Flagship series are some of the thinnest in the world, providing extremely fast and accurate transient responses that capture every musical detail with precision and near-zero distortion. The culmination of decades of research and development. Featuring our Nano-scale diaphragms, Fluxor™ magnet arrays, and Uniforce™ voice coils, our Flagship series truly represents the pinnacle of HiFi audio technology. Included: LCD4z planar magnetic headphones 1.9m 4-pin XLR balance cable with 1/4" TRS adapter Standard travel case Specifications Style- Over-ear, open-back Transducer type- Planar Magnetic Magnetic structure- Double Fluxor magnet array Phase management- Fazor Magnet type- Neodymium N50 Diaphragm type- Nano-Scale Uniforce Transducer size- 106mm Maximum power handling- 5W RMS Maximum SPL- >130dB Frequency response- 5Hz-50kHz THD- <0.1 % @ 100dB Impedance- 15 ohms Sensitivity- 98dB/1mW (at Drum Reference Point) Minimum power requirement- >100mW Recommended power level- >250mW Weight- 560g