Sennheiser IE 40 PRO

The high expectations placed on in-ear monitoring are effortlessly satisfied by the IE 40 PRO thanks to an advanced dynamic driver system. The innovative diaphragm delivers a warm sound, yet powerful and precise, even in extremely loud environments. Even at maximum sound pressure levels, the signal remains distortion-free and precisely defined. The IE 40 PRO is a superior monitoring device for musicians and DJs that adapts to every ear. A compact design combines a secure fit with excellent wearing comfort. It’s robust construction is designed to be suitable for the rigors of stage use from the connection to the cable duct.
 

Impedance - 20 Ohms
Frequency response - 20 - 18,000 Hz
Sound pressure level (SPL) - 115 dB (1kHz / 1 Vrms)
THD, total harmonic distortion - < 0.1 % (1kHz, 94dB)
Cable length - 1.3m (4.3 feet)
Transducer principle - Dynamic
Weight -18 g (0.6 oz)
Attenuation - < 26 dB