| The
Re-emergence
of the
Integrated
Amplifier |
|
| Anthony
Chiarella |
| 14
April
1999 |
What's
the fastest
growing
product
category in
consumer
audio?
In
each of the
past two
years, unit
sales of integrated
amplifiers
have more than
doubled over
the year
before, and
dollar volume
has escalated
even more
dramatically.
Nowadays, it
seems that
virtually
every high end
manufacturer
has added at
least one
integrated to
its product
line. And
while you
probably won't
find much on
the shelves of
your local
Circuit city
or other mass
merchant,
these compact,
cost-effective
components are
now proudly
displayed and
demonstrated
in all of the
finest audio
salons, not to
mention the
private
listening
rooms of
serious music
lovers!
Why
have
integrated
amplifiers
become so
popular, so
quickly? It's
mostly a
matter of how
you consider
the component.
From the late
1950's through
the mid-'70's,
the product
owed its
immense
popularity to
a single
factor: price.
Essentially,
an integrated
amplifier was
viewed as a
receiver
without a
tuner. At the
time, you see,
a tuner was an
analog device,
a complex,
costly amalgam
of dials,
flywheels and
RF tuning
circuits.
Eliminating
this
contraption
yielded a
considerable
savings, and
made it
possible for
penny-pinching
hobbyists to
assemble a
good system
for the
smallest
possible
amount of
money. By the
end of the
'70's,
however, the
advent of
inexpensive
ICs and
super-cheap
LED displays
had driven the
cost of a
tuner to so
low, it
actually
didn't pay for
manufacturers
and retailers
to inventory
two separate
models (i.e.,
with and
without the
tuner), so
integrated
faded away.
But
if integrated
amplifiers
disappeared
along with
their price
advantages,
they have
reappeared
because of
their dramatic
sonic
benefits.
Rather than
being viewed
as a
"receiver
without a
tuner,"
their
designers and
manufacturers
now conceive
them as
"a high
end amplifier
and preamp
sharing a
single
chassis."
Big
difference!
One of the
major problems
of component
design is the
uncertainty of
what the other
components in
the system
will be. As a
result, a
preamplifier
manufacturer
will need to
design his
circuit will
an extremely
low output
impedance,
generous
output voltage
and a high
gain factor. A
similar set of
requirements
holds true for
makers of
power
amplifiers,
speakers, and
etcetera. Only
by addressing
all possible
interactions
can a
manufacturer
be sure that
his/her
products will
shine in a
wide variety
of systems.
Problem is,
adherence to
these
parameters
often entails
compromises in
terms of pure
performance.
Simply put, if
a product is
designed to
work with
everything, it
will probably
not excel with
anything.
This
is an extreme
statement, one
that becomes
less valid as
the price,
sophistication
and quality of
a component
improves.
Nonetheless,
knowing the
characteristics
of the other
parts of the
system
provides the
designer with
a tremendous
advantage. By
engineering
the amplifier
and
preamplifier
as a single
unit, it is
possible to
make each half
complement the
other to a
degree not
possible with
separates.
What's more,
integrates
eliminate the
need for an
expensive pair
of
interconnects,
not to mention
the signal
degradation
which two sets
of
metal-to-metal
RCA
connections
inevitably
entail. Throw
in savings in
space and heat
dissipation-and
yes, the
reduction in
cost that
occurs from
using one
chassis
instead of
two-and you've
got
explanations
aplenty why
integrated
amplifiers
have attained
their current
position of
prominence.
Of
course,
there's more
to a great
component than
sound quality.
As National
Sales Manager
for VAC, I had
the good
fortune to
work with
Kevin Hayes,
President, and
Kevin Carter,
Director of
Marketing,
during the
creation of
VAC's awesome
new Avatar, an
integrated
amplifier that
ranks as one
of the most
eagerly
awaited
products in
the history of
high end
audio.
Certainly,
this is one of
the
finest-sounding
components-at
any price-I've
ever had the
pleasure to
hear. But, as
I have said,
great sound is
only one
element of a
successful
product. Just
as important
as its superb
sonics, making
Avatar a
winner was a
matter of
designing the
unit with
ample power
(60 watts per
channel) to
drive the
majority of
modern
loudspeakers,
outfitting it
with front
panel biasing
controls and
metering to
make it easy
to use,
providing a
half dozen
inputs
(including a
full tape loop
and a pure
tube phono
preamplifier)
to accommodate
future system
growth, and
adding a
unique
"Home
Theater"
circuit which
enables the
unit to
simultaneously
flourish in
both analog
stereo and
multi-channel
digital
environments.
And hey, the
fact that the
thing is
drop-dead
gorgeous
didn't hurt,
either!
Let's
add one more
challenge: as
if delivering
all these
features
wasn't tough
enough,
delivering
them at a
target price
of $3,490
presented a
nearly
insurmountable
obstacle. If
you've ever
heard a VAC
Renaissance
amplifier, or
some similarly
state-of-the-art
component, you
know what can
be achieved
when a gifted
designer has
no price
constraints
placed upon
his vision. On
the other
hand, when
money IS an
object, the
creative
process
becomes
exponentially
more
difficult. As
remarkable a
component as
Avatar is, the
fact that we
were able to
produce it a
price which
most folks can
afford is even
more
miraculous.
Truth
is, given the
relentless
advance of
audio
technology,
and given the
storehouse of
knowledge
available to
modern
designers, its
not that hard
to make a
product that
sounds good.
Making it
saleable is
another-and
dramatically
more
difficult-matter.
A quarter
century ago,
when the high
end was first
learning to
walk, demand
for gear was
so much
greater than
supply that
any component
which could be
produced would
find a buyer.
Nowadays,
the abundance
of sonically
satisfying
product makes
the design
process much
more difficult
for a
manufacturer,
and much more
rewarding for
a consumer.
The Darwinian
forces of
competition
have created a
market in
which only the
strongest
companies and
best products
can survive
and thrive on
the dealers'
shelves.
Reliability,
aesthetic
beauty, ease
of operation,
versatility,
pride of
ownership and
razor-sharp
pricing are
factors that
must be
addressed and
emphatically
answered if a
component is
to win a place
in the hearts
and homes of
modern music
lovers.
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