Audio Research DAC8 Datenblatt PDF herunterladen (Seite 2)

AUDIO RESEARCH

DAC

8 DIGITAI-

CONVERTER

"The

DAC

8's state-of-the'q'rt

digital

performance is the

result

of a

low-jitter

Dual

Mqster

Clocls,

which

Produces

superior

D/A

conuersion.

But it's

more

than

a one

trich

pony,

and

ARC haue

talzen

great

care

to

ensure

the

DAC 8

does

full

justice

to

a wide

range of

digital

source

options."

soundinq

'bigger'

and

more dimensional,

with increased

dynam

c range

and

enhanced

impact and

attack.

Curiously

perhaps,

this

makes it

posslb,le

to

listen at slightly

reduced

volume

levels.

Because

the sound

has

greater

drive,

lt seems

to fill the

room

more effortlessly.

As a result,

you

don't

have

to

play

ihings

excesslvely

loudly

to create

a big

room-fil ing sound.

The mus c

projects

with

greater

ease

-

just

like

good

analogue.

While

the DAC 8

produces

tremendous

weight

and security,

its

musical

presentatlon

is subtle

and finely

shaded,

with

plenty

of delicacy

However,

there's

nothing

effete

or fragile

about

the sound;

it's always

soLid

and

authoritative.

Tonally, the

results are

smooth

and reflned,

with a

nlcely open,

highly detailed,

top-end.

Subjeciively,

the

internal

separation

between

voices

and instruments

is extremely

good

too.

This

produces

an

enhanced

sense

of space

and

depth,

wlth

increased

dimensionality,

plus

the impress

on of a

wider deeper

soundstage,

and less of

ihat dynamic

'flatness'

that can

mar CD

reproduction.

lmpressive

stuffl

But while the

sonic

improvement

delivered

by the DAc

B overyour

player's

interna

DAC s

important,

the versatility

of the

product

is an equally

strong

selling

point.

With CD

sales

in dec ine

due to download

ng, many

listeners

want a

product

that allows

access

to music

ln ditferent

digita

formats

The

DAC BS state-of-the

ad

digital

pedormance

is the result

of a low-jitter

Dual

lvlaster

Clock

which

produces

superior

D/A conversion.

But it's

rnore

than

a one trick

pony,

and

ARC

have taken

great

care

to ensure

the

DAc

I

does full

justice

to a

wide

range of digltal

source

options.

Those of

us

partnering

the

DAC B with

a CD

player/transporl wlll

probably

connect

using the

conventional

S/PDIF

intedace

But, a USB

2.0 HS

input, optimised

for six

different

sampling

rates,

is also

provided

These rates

are 44.1,

48,88.2,96,

176.4,

and

192kHz,

makjng the

DAC 8 compatible

with a

wide variety

oJ sources.

While S/PDIF

remains the

input of choice

to'

'igc

qJal

ly auoio.

rhe

DAC

B

p

om ses

comparable

high-grade

peformance

from

USB

based

digital sources.

As

a result,

Audlo Research

claims

the DAC

B will

provlde

superior

sonic

resuts, regardless

of

the digital

input chosen.

Moreovet

unlike

AFC'S

DAC 7, the

DAC

I

lets

vou

listen to digitaL

music at

its original

sampLing

rate, ensuring

'bit-perfect' low

jitter

resuts.

Because

PC and

[,4AC systems

do

not

properly

support

sampling

rates

over

96kHz,

ARC'S special

ASIO

drivers ensure

USB sources

stay sonlcally

transparent

at all

sampling

frequencies.

Four

24bl

digital to-analogue

converters

are

emploved,

with each channe

having

dual converters

running

in mono

mode.

AFC claims

this lowers

the noise

floor

and lncrease

dynamic

range.

Two low

jitter

master osci

lators are

used

-

one

for 44.1

.

88.2,

and

176.4k14 and

the other

for 48,

96, and

192kHz

sampling

rates.

The master

osci lator

selects the

correct

sampllng

Jrequency

automatlcally,

avoiding

decod

ng and

quantization

errors.

A

I inputs

are Galvanlcally

isolated

from the

source to

e

iminate

noise and

jitter

entering

the DAC

8.

The analogue

output

stage

features a

true

direct coupled

differential

amplifler

wth

bandwidth

in

excess

of 90kHz.

The DAC I

is a fully-balanced,

zero

feedback,

solid state

design,

with a direct-

coupled

FET output stage.

The

power

supply

ls

generously

regulated,

with separate

audio

>

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