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MODEL
HF
60
HIGH
FIDELITY
60 WATT
AMPLIFIER
general description
GENERAL
The
EICO
HF-60
is
a
basic
power
amplifier
designed
for
flawless
reproduction
of
the entire
dynamic and
frequency
range
achieved
In
present-day microgrove and
tape
re-
cordings.
Enormous
undistorted reserve
power,
excellent
transient
response,
and
exceptional
stability result
in
ef-
fortless
response
to
peak power demands,
well-defined
bass,
clean
treble,
and an
overall
crystal clarity
of the
reproduced sound without
false
emphasis
anywhere
In
the
audio spectrum.
The
circuit
employed
Is
a variant of the
British
Mullard
type including
a genuine
Ultra-Linear output
stage,
a
combination
now
recognized
as
one
of the
very
best
pos-
sible
amplifier designs.
A
plus factor
In
the
EICO HF~60
is
the
use of the
ACRO
TO-330
output
transformer, the
very
finest in
its
power
class.
Other
factors
worth con-
sidering
in
the
choice of an
amplifier are detailed
in
the
list
of features
below.
The
HF"60
has
been
designed
to
maintain
its
excellent
characteristics
under speakerload
as
wellas
theresistive
load
normally used
fortesting.
Phase
corrections
have
been provided
ot
both extremes of
the
audio spectrum
to
Insure
stability
under
all
conceivable
conditions
and
to
insure that variations
in
components and
construction will
not
affect the
performance.
Overload
characteristics
are
excellent
and
the
HF"60
will
not
exhibit
bounce
or
flutter
under
pulsed conditions.
The
Model HF~60
can
be operated from
any
source
cap-
able
of delivering
a
1/2 volt Input signal.
The
source
maybe
onypreamplifler-contro!
unit or
a combined
tun-
er-preamplifier-control
unit.
An
excel
lent
preamplifier-
control unit,
designed
to
take
its
operating
power
from
the
HF"60,
is
the
EICO Model HF"61A
High
Fidelity
Master
Control.
The
Model HF"61
is
identical to
the
HF-61A
except
that
it
contains
its
own
power
supply.
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