General Description

The audiophile HD 650 is the ultimate in open, dynamic headphone design.  Developed from the award-winning HD 600, the HD 650s feature improved materials for even better sound reproduction.  They captivate the listener with their expressiveness and emotion while maintaining absolute precision and lifelike reproduction.  Enjoy sound in perfection!

AuSIM part number: AuSEN-HD650
Headphones can be ordered through AuSIM's on-line eCommerce site. ... ORDER

Features Systems with narrow tolerances (± 1 dB), hand-picked in pairs Highly optimized magnet systems for minimum harmonic and intermodulation distortion High-quality titanium/silver finish Specially developed acoustic silk for precise, uniform attenuation over the entire area Specially modulated connecting cable (detachable) made from highly conductive OFC copper, Kevlar-reinforced, with very low handling noise, i.e. low structure-borne sound sensitivity Extremely lightweight aluminum voice coils ensure excellent transient response Gold plated ¼" jack plug with adaptor lead to 3.5 mm jack plug 2-year guarantee

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Technical Data
Nominal impedance	300 Ohm
Contact pressure	2.5 N
Weight w/o cable	9.2 oz/260 g
Jack plug	1/8 inch/3.5mm stereo mini jack plug with adapter to 1/4 inch/6.3 mm stereo jack plug
Transducer principle	Dynamic, open
Ear coupling	Circumaural
Connection cable	10 ft/3 m detachable dual-sided OFC cable
THD, total harmonic distortion	0.05 %
Sound pressure level (SPL) @ 1 KHz	103 dB
Frequency response (headphones)	12 - 39,500 Hz

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