HiFiMAN EF-6 User manual

HiFiMAN
www.hifiman.com

HiFiMAN
EF-6
Thank you for purchasing the HiFiMAN
EF-6,
our flagship headphone
amplifier and we believe one
of
the finest available
on
the market. The
EF-6
is
a reference-quality, no-compromise product designed to
properly drive the most demanding headphones such as our HiFiMAN
HE-6.
This Owner•s Guide
is
intended to provide a useful overview of your
new
EF-6
and how to best install and operate
it
for many years of
enjoyment, safety and satisfaction. Please take the time to familiarize
yourself with its features. If you have any questions or need additional
information, contact your authorized HiFiMAN.
Product Overview
The HiFiMAN
EF-6
is
a Class A high-end headphone amplifier with
exceptional sound and ample power reserves. The total
DC
feedback
amplification circuit technology
is
adopted so as to reduce the sound
loss which might
be
caused by capacity coupling. Three pairs
of
medium-power field efficiency transistors specially designed for audio
use are set
on
each track
of
the output stage to guarantee that this
amplifier can operate
in
purely Class A mode.
The audiophile elements and precise manufacturing processes used
in
the
EF-6
play
an
important role
in
this amplifier•s sound quality.
the 160 v
A transformer and CLC filter
provide
great
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Key Features and Specifications
• Dimensions: 13" (330 mm) Wide X 12.2" (310mm) Deep X
4.1"
(1 05mm) High
• Weight: about 24 lbs. (10.75 KG)
• Power output: 5 watts
of Class A amplification for superb
sound quality
• Can easily drive the most demanding headphones
• Wide bandwidth, low distortion, S/N ratio greater than 95 dB
• Robust construction
of brushed aluminum and steel
• Preamplifier features
hand-made step attenuator and hand-
selected resistors
e THO: 0.03°/o (1 wand 1 KHz)
• High-precision current mode potentiometer

HiFiMAN
EF-6
Front panel layout
1) Power switch: press
in
to turn the amplifier on, press out to turn
off
2) Volume control: turn clockwise to increase volume, counter-clockwise
to reduce volume
3) Feature selection: CD, AUX and LINE-IN
4)6.
35
mm headphone jack: connect with6.
35
11m
interface headphone
5) Mini output jack: connect with the 3.5 interface audio signal
6)
4-Pin
XLR OUTPUT: connect with
4-Pin
balanced headphone
(HE-6)
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Rear panel layout
7) Input jacks: According to the
key@
chosen, choose corresponding
LIR track
8) Gain switch: the gain will decrease by about 1
Odb
ifthe switch is on
9) 110 V and 220 V switching: select for your local power source
1
0) AC power connection: connect first before turning on power
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HiFiMAN
EF-6
Caution
1.
Before connecting, make sure
your
local
power
supply voltage matches
the voltage
of
the supporting transformer. If not,
or
you are not sure,
please contact
your
authorized HiFiMAN dealer.
2.
Make
sure the
power
switch on the front panel
is
in
off
position.
3.
Connect
the
power
cord to the amplifier.
4.
Use an audio cable to connect the audio inputjack
of
EF-6
and the output
jack
of
the music source. Do not reverse the L/R channel orientation.
5.
Turn the amplifier on and when the indicator light on the front panel
turns from yellow to blue,
it
indicates that the protection circuit
is
working
normally.
Now
you are ready to enjoy listening. Note: a red light indicates
a fault. Check the fuse and replace if
necessary
(fuse specification:
2.5A/250V).
6.
After shutdown, wait at least
5
seconds
before turning the amp back on.
7.
Proper operating environment:
14
F
to
104 F (-1
OOC
to
40°C
)
with natural
cooling.
8.
Always keep children
away
from the amplifier. Keep the amplifier
away
from other dangerous
or
high-temperature
fusible items, such as
lighter, butane
gas
tank, airfreshener, insecticide, solid
and orgaaio solvent, etc.
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Warranty
• Lifetime free repair when installed, set up and used
according to our recommended instructions. Contact us first
to troubleshoot before returning and if needed an RA will be
issued. Return shipping to HiFiMAN
or
authorized service
facility
is
owner's responsibility.
• For residential use only.
For any further information or questions, please contact
your authorized
HiFiMAN
dealer. Or email
us
directly
at
[email protected].
www.hifiman.com
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