Tel:
011 894 7390 Mobile: 082 339 0172 E-mail: info@acousticaudio.co.za
28 Nathan Close, 10th Avenue, Ravenswood, Boksburg, Gauteng
GPS
Coordinates:
26º11’46
S
&
28º15
’29
E
Trading
hours
Monday
to
Friday
8:00-17:00
Saturday
8:00-13:00 |
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DLS
ULTIMATE
A4
THE
BIG
FOUR
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Fabulously
high
end
looking
and
feeling
product.
All
the
connections
and
Allen
headed
bolts
are
Gold
plated
and
the
power
and
speaker
connections
are
all
encapsulated
in
clear
Acrylic
housings
and
are
tightened
with
Allen
headed
grub
screws.
There
are
push-button
toggle
(in/out)
switches
to
activate
crossovers’
functions
and
multiplier
switches.
The
labels
are
all
neatly
marked
in
a
subtle
near-colour
to
the
heatsink.
The
RCAs
are
very
high
quality
panel
mounts
and
bear
covers
for
keeping
dust
out
until
you
use
them.
A
large
and
chunky
product,
it
is
about
the
heaviest
in
the
entire
group
of
eighteen
amplifiers
tested
within
the
mega-group.
The
DLS
Ultimate
A4
has
two
sets
of
DC
power
connections
that
are
in
fact
fully
parallel
such
that
you
can
affix
a
power
capacitor
directly
to
the
amp’s
power
rails
without
the
extra
connection
junctions
normally
created
with
power
blocks
etc.
The
extra
terminal
between
the
live
and
ground
on
the
secondary
set
serves
to
act
as
the
positive
voltage
feed
for
an
optional
fan,
should
you
wish
to
enshroud
your
amplifier
in
a
custom
housing
which
is
likely
at
this
high
end
level.
The
manual
is
more
comprehensive
electronically
than
any
I
have
ever
seen,
even
including
a
components
sheet
detailing
the
Burr-Brown
and
Analog
(sic)
Devices
brand
fine
tuning
integrated
chips
and
bragging
about
their
own
DLS
Audio
Grade
and
Tantalum
fine
tuning
capacitors.
The
whole
feel
and
appearance
is
totally
high
end
and
all
the
small
golden
switches
and
potentiometers
fit
their
holes
to
the
millimetre.
-
Class
AB-
4
x
85w
RMS
@
4
Ohms
-
4
x
145w
RMS
@
2
Ohms
-
4
x
220w
RMS
@
1
Ohm
-
2
x
250w
RMS
@
4
Ohms
bridged
-
2
x
400w
RMS
@
2
Ohms
bridged
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Extruded
brushed
gunmetal
coloured
Aluminium
heatsink
with
Aluminium
plate
end
pieces
and
steel
plate
base.
Power
&
Protect
LEDs
-
Dual
sets
of
4Ga.
Gold
Plated
power
terminals
with
Allen
headed
grub
screw
connection,
encapsulated
in
clear
Acrylic
housings,
with
second
remote
terminal
used
to
drive
optional
fan
-
4Ch
RCA
input
on
high
grade
discrete
gold
plated
panel
mounted
sockets
with
prophylactic
dust
covers
until
use
-
Subsonic
filter
function
possible
by
setting
HP
filter
to
20Hz
-
Front
Crossovers:
Lowpass
50Hz
to
125Hz,
Highpass
20Hz
to
200Hz
or
60Hz
to
600Hz
by
3x
button,
all
@
12dB
per
Octave
-
Rear
Crossovers:
Lowpass
45Hz
to
200Hz
or
90Hz
to
400Hz
by
2x
button,
Highpass
20Hz
to
200Hz,
all
@
12dB
per
Octave
-
Input
sensitivity:
02V
to
7.0V
-
Stereo
&
bridged
operation
-
Frequency
response
not
quoted
-
Signal
to
Noise
Ratio
>100dB
-
Channel
separation
not
quoted
-
Fuse
Rating
150A
x
1
by
very
close
external
fuse
&
holder
-
no
internal
fuse
fitted
-
like
JL
Audio
300/4v2-
HxWxD(mm)
73
x
465
x
240mm
-
Supplied
with
Swedish/English
detailed
whole-range
manual
and
electronics
components
list |
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EDITOR
REVIEW
by:
Adam
Rayner
www.talkaudio.co.uk
|
To
the
uninitiated,
referring
to
an
amplifier
for
a
car
that
costs
a
cool
eight
hundred
smackers,
as
being
‘Good
Value
for
Money’
(as
I
am
with
its
nine
out
of
ten
VFM
rating)
might
seem
bonkers.
But
consider
that
for
Audison,
with
their
Thesis
range,
posh
can
go
all
the
way
up
to
£3,000
for
a
stereo
amplifier
and
don’t
get
me
started
on
Krell
or
Classé
in
home
amplifiers,
as
the
sky’s
the
limit.
So
why
can
an
amplifier
cost
so
ruddy
much?
Well
it’s
about
the
zone
where
mere
electronic
design
is
transcended
by
artistry.
At
this
level
stuff
isn’t
just
designed
by
a
clever
fellow
and
sent
into
production,
this
equipment
gets
listened
to
by
those
with
known
good
ears
to
see
if
electronic
component
choices
make
for
the
right
results.
The
differences
might
seem
small
but
if
you
were
played
a
commodity-type
amplifier
and
then
A/B’d
to
another
rig,
identical
but
for
a
much
better
amp,
you
would
of
course
hear
the
difference.
Even
if
the
rigs
had
been
sound
pressure
level
matched,
so
that
louder
was
not
just
better
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This
product
is
about
‘Real’
HiFi
for
cars.
It’s
for
those
who
want
the
best
sound
and
know
that
the
logarithm
is
badly
against
them.
Making
something
to
go
boom
is
one
thing
but
making
super
quality
sonics
is
a
lot
more
challenging.
Diamond
Audio’s
D7
was
£2,500
and
the
DLS
vacuum
tube
preamplified
product,
the
TA2
is
priced
at
£1,500.
So
for
what
this
actually
is,
it
represents
high
end
VFM!
I
loved
its
posh
construction,
right
down
to
the
smooth-as-a-piston-in-a-well-lubed-pot
manner
in
which
the
RCA’s
penises
penetrated
the
solid
Teflon
dielectric
RCA
panel
sockets.
They
intromitted
perfectly.
Like
the
Tru
Technologies
Steel
44,
this
amplifier
does
feel
like
it
could
benefit
from
a
stonkerating
high
resolution
signal
from
a
pukka
line
driver
once
up
and
running
on
the
test
rig
but
it
worked
well
on
the
signal
I
was
able
to
muster.
Immediately
the
delicious
levels
of
detail,
sweetness
and
terribly
fast
resolution
of
those
oh
so
important
high
frequency/high
rise
time
sonic
components
was
right
in
your
face.
If
the
Tru
Technology
Steel
44
played
the
Morel
Supremo
6
speakers
well,
this
amplifier
was
awesome
and
made
you
see
why
the
speakers
were
£1,400
a
set.
The
amplifier
wasn’t
just
superbly
clean
and
pleasant,
it
was
also
able
to
go
loud
as
well,
with
a
creditable
125.4dB
raised;
measured
via
the
SPL
side
of
the
AudioControl
SA-3055
RTA
that
we
use
to
check
stuff
out.
Not
just
made
to
go
loud,
it’s
about
the
scale
of
things,
you
can
hear
the
size
of
the
sound
stage
even
at
sensible
or
lowish
levels
as
the
headroom
is
just
enormous.
This
headroom
also
makes
for
vast
dynamism
with
the
sound
able
to
go
from
clear
and
pleasantly
restful
to
major
emotional
impact
and
goose
bumps
in
a
fragment
of
a
second.
I
found
myself
just
simply
enjoying
the
test
disc
yet
again,
when
I
should
have
been
getting
on
with
fitting
the
next
amplifier
to
the
rig.
The
crossovers
are
comprehensive,
clever,
wide
ranging
and
intelligently
designed.
It
doesn’t
feature
a
whole
load
of
extra
silliness,
just
the
best
of
what
DLS
reckon
really
matters
and
these
work
very
well
and
are
clearly
intended
to
be
used,
and
not
just
put
there
as
some
punters
might
complain
if
they
were
not
present.
A
completely
brilliant
single
footprint
four
corner
solution
for
an
utterly
audiophillic
installation
and
scores
so
brilliantly
in
so
many
directions
(including
that
crucial
VFM
thing)
that
is
garners
only
our
second
ever
audio-based
State
of
the
Art
award.
This
product
is
everything
it
claims
to
be
and
makes
me
feel
good
that
it
even
exists.
Sonic
excellence
on
the
Hoof!
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We
accept
all
major
credit
cards |
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