Beyerdynamic DT 770 PRO 250 Ohm OverviewThe DT 770 PRO is a closed dynamic headphone of exceptional quality suitable for the most demanding professional and audiophile applications. The long term comfort and accurate performance make the DT 770 PRO the perfect monitoring headphone for recording studios, post production or broadcasting situations. The low mass coil and diaphragm assembly produce a transient performance equalled only by electrostatic earphones, and, in combination with a carefully tailored frequency response offer a natural and balanced sound.The DT 770 PRO features 32, 80 or 250 ohm drivers and a gold plated 3.5 mm stereo jack with 1/4" inch adapter, and is therefore suitable for use with almost all headphone amplifiers. Soft earpads and adjustable, sliding, earpieces together with a single sided connecting cable ensure listening comfort during extended periods of use.SPECS:Transducer Type: DynamicOperating Principle: ClosedFrequency Response: 5-35,000 HzNominal Impedance: 250 ?Nominal SPL: 96 dB SPLTotal Harmonic Distortion: Nominal Handling Capacity: 100 mWSound Coupling to the Ear: CircumauralWhat's in the Box: 1 x Beyerdynamic DT 770 PRO 250 Ohm Reference Headphones 1 x 3m Coiled Stereo Cable 1 x Beyerdynamic Drawstring Bag 1 x Headphone Splitter1 x 6ft Headphone Extension Cable 1 x 6.35mm (1/4") Stereo Jack Plug1 x Microfiber Cleaning Cloth1 x 2-Year Limited Manufacturer Warranty 1 x 1-Year Extended WarrantyWarranty Coverage:2-Year Limited Manufacturer Warranty 1-Year Extended Warranty = 3 Total Years of Protection for Your New Device