Superlux HD662EVO - Manual (Page 3)

Specifications
Type
HD681 EVO: Dynamic, Semi-open
HD662 EVO: Dynamic, Closed-back
Driver
ø50 mm, neodymium
Sensitivity
98 dB SPL (1mW)
Frequency Response
10-30,000 Hz
Maximum Power
HD681 EVO: 300 mW
HD662 EVO: 200 mW
Rated Impedance
32 Ω (copper-coated aluminum wire)
Earpad
Leatherette
Headphone Caliper Pressure
HD681 EVO: 3.5 N
HD662 EVO: 5 N
Cable
Detachable 1-meter (3.3 ft.) & 3-meter
(9.8 ft.) straight, single-sided; plugin
cable on headphones (mini stereo
connector)
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
3
Connectors
Gold plated stereo mini plug
Net Weight(without cable):
HD681 EVO: 265 g (9.3 oz)
HD662 EVO: 275 g (9.7 oz)