Adcom GFA-555 Pro - Safety Warnings; Essential Safety Precautions

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1
Because of the great amount of electrical energy stored in the capacitors, the design of the GFA-555 will
allow music to remain audible for several seconds after the amplifier has been shut off. We suggest that you wait
until the red power LED has stopped glowing before turning off your preamplifier and other components. This
procedure will prevent turn-off transients from reaching your speakers. During the shut down procedure, you may
hear small noises through your speakers which result from capacitor discharge. This is normal, and is no cause for
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concem.
SECTION 5
SAFETY WARNING
CAUTION:
TO
PREVENT
ELECTRICAL
SHOCK,
DO
NOT
REMOVE
THE
AMPLIFIER
COVER.
THERE
ARE NO
USER
SERVICEABLE
PARTS
INSIDE. REFER
SERVICING
TO QUALIFIED
PERSONNEL
ONLY!!
i
:
CAUTION: BURN-OUT OF THE OUTPUT STAGE BECAUSE OF FAILURE TO OBSERVE THE
PRECEDING AND FOLLOWING PRECAUTIONS WILL VOID THE WARRANTY!
There is no such thing as absolute reliability or protection when amplifiers are abused. While the GFA-555
amplifier
has
been
designed
to
operate
reliably
under
normal
conditions,
it
may
not
be
impervious
to
gross
abuse.
There
is
one
condition
which
must
always
be
avoided:
This
condition
is
called
RF
Detection
and
because
ADCOM
amplifiers
have
such
an
extremely
wide
band
width,
RF
Detection
will
almost
certainly
cause
failure
of
the
output
devices
if
it
occurs.
Damage
to,
or
failure
of
this
equipment
due
to
RF
Detection
is
considered
abuse,
and
is
specifically
excluded
from
the
ADCOM
warranty.
The
following
acts
cause
RF
Detection
and
MUST
BE
AVOIDED:
1) Connecting the inputs or outputs while the amplifier is ON.
2)
Using
the
“Thumb
Test”.
It
is
a
dangerous
habit
to
connect
cables
to
the
inputs,
touching
the
other
end
of
the
cable
while
the
amplifier
is
ON.
This
may
not
only
cause
amplifier
failure
but
may
destory
your
loudspeakers
due
to
the
high
power
surge
emitted
from
the
amplifier.
It
is
essential
to
follow
the
procedure
of
completely
hooking
up
your
system
before
turning
anything
on!
A
few
simple
precautions
will
contribute
to
trouble
free
performance.
Because
of
the
high
power
capability
of
the
GFA-555,
ADCOM
will
not
be
responsible
for
any
damage
to
speakers
or
other
components
due
to
their
inability
to
handle the amplifiers power output or any other misuse.