HD661
Professional Studio Headphone
Extended frequency response for accurate reliable sound reproduction
Use as monitoring headphones in a noisy environment
Broadcast and TV applications
Film and theatre applications
Recording applications
Features
•Dynamic, closed-back circumaural
headphones
•High noise attenuation
•Ø40 mm high resolution drivers
•Patented self-adjusting headband for
greattandmaximumcomfort
•Rotating ear pad construction for
convenient single-ear monitoring
•Detachable, single side cable
•Light weight
•Multicolor available
Specications
Acoustic Design
Dynamic, closed-back
Driver
ø40 mm, neodymium
Sensitivity
102 dB SPL (1mW) at 1KHz
Frequency Response
10 – 20,000 Hz
Maximum Input Power
200 mW
Rated Impedance
68Ω@1KHz
Earpad
Leatherette
Head Band Pressure
Approx. 4.5 N
Cable
1-meter(3.3 ft.) & 3-meter (9.9 ft.)
straight cable, single-sided
Connector
Stereo mini jack
Net Weight
190 g (6.7 oz)
Attention
Hearing Damage
Avoid using headphones with the volume
turned up for an extended period of time.
Following are guide line by Occupational
Safety and Health Administration and
CDC, NIOSH:
dB
SPL
Occupational noise
exposure 1991
NIOSH and CDC
2002
85 8 hours
88 8 hours (90 dB SPL) 4 hours
91 6 hours (92 dB SPL) 2 hours
94 4 hours (95 dB SPL) 1 hours
97 3 hours 30 min
100 2 hours 15 min
103 1.5 hours (102 dB SPL) 7.5 min
106 1 hours (105 dB SPL) < 4 min
109 30 min (110 dB SPL) < 2 min
112 ~ 1 min
115 15 min ~ 30 sec
2 3
General Description
The HD661 is a closed-back dynamic
headphones. Sound quality meets the
demanding professional recording studio.
Patented sturdy structure provides
long lasting durability even in challenge
condition. Light weight and optimized
mechanical pressure provides long-term
wearing comfort. Equipped with 2 straight
cables, short one is 1 meter long for
palm size sound source on-the-move
applications. Long one is 3 meter long,
for professional monitoring applications.
Inter-connect both cables, for even more
distant requires. Included cable clip can
secure detachable cable from pulling out
by incident.
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