User Guide

Cat. No. 009969
HD 650
Headphones | Audiophile Headphones
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 preci -
sion and lifelike reproduction. Enjoy sound in all its perfection.
Features
Engineered for music
Hand-selected, matched headphone systems with very tight
tolerances (+/- 1 dB)
Computer-optimised magnet systems for minimising harmonic
and intermodulation distortion
Extremely lightweight aluminium voice coils ensure accuracy and fast
transient response
Neodymium ferrous magnet systems for high effi ciency
Specially developed acoustic silk provides uniform damping over its
entire frequency range as well as minimising IM and harmonic distortion
Elegant silver-titanium fi nish
High-quality metal mesh covers for superbly open and transparent
sound
Extremely natural, spatial sound image
Balanced, crisp bass and deep bass reproduction
Authentic voice reproduction
Specially developed OFC copper cable, Kevlar-reinforced, insensitive to
handling noise
Gold plated 1/4” jack plug with adaptor lead to 3.5 mm jack plug
Technical Data
Frequency response ..................... 10–39,500 Hz (–10 dB/1 kHz)
Transducer principle.................................................. dynamic, open
Nominal impedance ................................................................. 300 Ω
Sound pressure level................................115 dB (at 1 kHz, 1 V
rms
)
THD .......................................................................................... ≤ 0,05 %
Ear coupling ......................................................................circumaural
Contact pressure...........................................................approx. 2.5 N
Weight (without cable)............................................................ 260 g
Connector .............................1/4” (6.3 mm) stereo jack plug with
adaptor lead to 3.5 mm stereo mini jack plug
Connection cable..................... 3 m, detachable, OFC copper cable
10-39,500 Hz 300 Ω ≤ 0.05 % 260 g
6.3/3.5 mm OFC 3 m
Replacement Parts
Ear pads (1 pair) Cat. No. 050635