Sennheiser Open Dynamic Headphones HD 660 s [508826]

Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.

Features :
・ Open wired dynamic headphones with Refa Lensk Las
・ Significantly reduce harmonic distortion with a fully improved design of new transducers
・ Maintain accuracy by accurately matching left and right tolerances (± 1 db) with carefully selected headphone drivers
・ Use of 150 ohm nominal impedance
to enable direct connection to both fixed and mobile high-res players
・ Use of highly conductive OFC copper wire to effectively suppress handling noise and select a connecting cable equipped with a 6.35 mm stereo plug or a 4.4 mm Pentaconn balance stereo plug. Also includes 6.35 mm to 3.5 mm adapters
・ Storage box included
Specification
Type : Dynamic, open type
Frequency characteristics : 10 to 41000 Hz (-10 db)
Impedance : 150 Ω
Sound pressure level (SPL) : 104 db
Connecting cable : 6.3 mm stereo standard plug, 4.4 mm Pentaconn (balance)
Weight : approx. 260g (no cable)