The DT 770's closed diffuse-field system allows the user to exclude ambient sounds while still experiencing an open spatial feel- important for professionals who require a full bass sound as well as clinically accurate high and mid-range reproduction. Closed-back design "Bass reflex" technology for improved bass response Rugged headband construction Single-sided cable Frequency response 5 - 35,000 Hz. Nominal impedance 250 ohm Nominal SPL > 96 dB Power handling capacity 100 mW Ambient noise attenuation approx. 18 dBA Connection Gold-plated mini stereo jack plug (3.5 mm) & 1/4" adapter
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