But
LCR
RIAA
units
have
drawbacks
as
well.
These
drawbacks
are
high
cost
and
the
difficulty
of
impedance
matching;
the
latter
has
been
the
primary
hindrance
to
the
commercialization
of
this
superb
method
in
the
construction
of
phono
stage
amplifiers.
However,
Allnic
Audio
manufactures
a
high
quality
LCR
RIAA
unit
and
has
developed
a
600
ohms
impedance
matching
method.
•
For
superior
signal
to
noise
ratios,
the
H
‐
1500
II
PLUS
is
equipped
with
pure
vacuum
tube,
high
voltage
regulation
for
each
channel
and
a
power
supply
unit
separate
from
the
phono
stage
itself.
•
High
quality
MC
Step
‐
up
Transformers
with
Permalloy
cores
are
used
for
the
H
‐
1500
II
PLUS’s
dual
MC
inputs.
•
New
vacuum
tube
damping
technology
–
Allnic
Audio’s
patented
"Absorb
GEL
tube
damper"
technology
prevents
harmful
vibrations
from
reaching
the
signal
/
gain
tubes
and,
therefore,
prevents
micro
‐
phonic
noise
propagation
in
the
tubes.
The
Allnic
Audio
Absorb
Gel
damper
technology
effectively
solves
a
problem
that
plagues
most
tube
amplification
systems.
Provided
other
tube
components
do
not
introduce
micro
‐
phonic
noise
into
your
system,
with
the
Absorb
Gel
damping
system,
you
will
enjoy
a
degree
of
transparent
sound
that
will
surprise
and
please
you.
•
Pure
Class
A
operation
•
As
are
all
Allnic
Audio
products,
the
H
‐
1500
II
PLUS
is
fully
RoHS
(EU
Reduction
of
Hazardous
Substances
regulation)
compliant
in
construction
and
materials
WHAT’S
IN
THE
BOX?
Please
check
that
the
shipping
box
contains
the
following:
•
One
(1)
Allnic
H
‐
1500
II
PLUS
phono
stage
–
in
natural
aluminum
or
black,
depending
on
your
order
specification
•
One
(1)
Power
Supply
for
H
‐
1500
II/H
‐
3000
in
natural
aluminum
or
black,
depending
on
your
order
specification
•
One
(1)
power
umbilical
cord
•
One
(1)
IEC
type
power
cord
•
One
(1)
Owner’s
Manual
Note:
1)
The
H
‐
1500
II
PLUS
and
its
power
supply
ship
with
the
tubes
installed.
2)
The
H
‐
1500
II
PLUS
power
supply
will
work
with
most
IEC
type
aftermarket
power
cords.
Of
course,
only
you
can
determine
the
power
cord
that
works
most
synergistically
with
the
H
‐
1500
II
PLUS
in
your
system.
3)
Be
sure
the
H
‐
1500
II
PLUS
power
supply
unit
is
labeled
for
the
AC
voltage
of
your
location.
If
it
is
not,
please
contact
Hammertone
Audio.
We
advise
that
you
keep
the
boxes
and
other
packing
materials
that
your
H
‐
1500
II
PLUS
came
in.
It
will
be
useful
if
you
sell
your
H
‐
1500
II
PLUS
or
in
the
unlikely
event
you
need
to
ship
it
or
the
power
supply
for
service.
SAFETY
•
Disconnect
the
power
cord
by
pulling
the
plug,
not
the
cable.
•
Do
not
attempt
any
repairs.
Do
not
remove
the
units’
chassis
covers
without
specific
authorization
from
Hammertone
Audio.
•
Keep
the
power
cords
away
from
heat
sources
•
Keep
the
units
away
from
liquids
–
do
not
allow
any
liquid
to
enter
the
interior
of
the
units.
•
When
the
units
are
moved
from
a
cold
to
a
warm
environment,
allow
sufficient
time
for
any
condensation
to
evaporate
in
both
units
before
plugging
the
power
supply
unit
into
an
AC
connection.
•
Do
not
attempt
any
repairs.
•
Do
not
remove
the
units’
chassis
covers
without
specific
authorization
from
Hammertone
Audio.
•
See
the
notes
on
“Location,
Location,
Location”.
CLEANING
A.
Chassis
Use
only
a
soft,
lint
‐
free
cloth
dampened
slightly
with
5
