Specification Beyerdynamic Tesla T90

Transducer type Dynamic
Operating principle Open
Frequency response 5 Hz - 40,000 Hz
Impedance 250 Ω 
Nominal SPL. 102 dB (1 mW / 500 Hz)
Nominal THD < 0.05% (1 mW / 500 Hz)
Power handling capacity 200 mW
Sound coupling to the ear Circumaural 
Headband pressure 2.8 N
Weight without cable 350 g
Cable 3 m / single-sided
Connector Gold vaporised mini stereo jack plug (3.5 mm) & 1/4" adaptor (6.35 mm)
Accessories Carrying case
Max. SPL 125 dB (200 mW / 500 Hz)