Specifications

TX-DS989 PREMIUM TECHNOLOGY
T HE R EVOLUTIONARY 7. 1- C HANNEL
A MP The world’s first receiver with seven
identical, THX Ultra-certified amplifiers
under one hood, each belting out 160 watts
of pristine power into 6 ohms.
This unique 7-channel
engine not only produces
enough high-current,
low-impedance
power to knock
you out of
your seat, it
also perfectly
complements
THX Surround EX—
assuring you of the most
diffuse, 360º surround sound possible.
THX S URROUND EX—N EW M EANING
T O THE E XPRESSION “B EING T HERE ”
Load a Dolby Digital Surround EX-encoded
DVD, push play, and get ready to enjoy the
most incredibly realistic surround sound
you’ve ever heard. THX Surround EX takes
home theater to a new level by allowing for
sound to now be positioned directly behind
you. With specially encoded DVDs, like
Dolby Digital Surround EX and DTS-ES
Matrix 6.1, THX Surround EX processes
an additional matrix-encoded signal, then
divides it into two channels: the Surround
Back Left and Surround Back Right. Add the
cumulative effect to TX
-
DS989’s powerful
7-channel amplifier and you have unmatched
detail coming from all seven channels. In
short, the most unbelievable 360º pans,
fly-overs, and ambient sound imaginable.
7 C HANNELS , 7 S PEAKERS —A W HOLE
L OT OF C HOICES The TX
-
DS989’s
7-channel prowess doesn’t just extend to
THX Surround EX. It also allows you to
choose which speakers you want to use,
and for what. For example, during 5.1-
channel playback you can use the side-
mounted surrounds for cinema-surround
sound, and the rear-mounted surround
backs for optimum playback of discrete
multichannel music. Or take any source and
create a 7-channel
soundfield using
unique Onkyo-created
DSP modes like
Enhanced 7 and
All-Channel Stereo.
S UPER -P RECISE AKM 192 K H Z /
24-
BIT DAC S FOR A LL C HANNELS
The first receiver to sport digital-to-analog
converters of this speed (other receivers’
DACs only go up to 96 kHz) and for all
channels, the ultra-accurate DACs ensure
the TX
-
DS989 can handle digital signals
from DVD-Audio, SACD, and other future
formats. Plus, with a 120 dB dynamic
range, virtually jitter-free performance,
and the ability to take a 48-kHz signal and
double its sampling frequency to 96 kHz,
the high-speed DACs
give you incredible
detail and clarity
from all your
audio sources.
L INEAR O PTIMUM G AIN C IRCUITRY
Conventional amplifiers need a great deal
of attenuation just to produce a normal
listening level. This attenuation, or reduction
of amplitude, lowers the volume, but also
lowers the signal dangerously close to the
noise floor. Once your signal hits the noise
floor, it gets tainted with a small quantity
of distortion, which becomes magnified
through the amplification process. Onkyo’s
Linear Optimum Gain Circuitry, on the
other hand, adjusts the gain so that less
than half the amount of attenuation is
needed. This ensures the signal never
comes close to the noise floor, and avoids
noise contamination. Your benefit is
dramatically clearer, crisper sound.
V IRTUALLY E VERY M AINSTREAM
F ORMAT K NOWN TO M AN Maybe you
thought the day would never come, but it’s
here—THX Surround Ultra, Dolby Digital
DTS, DTS-ES Matrix 6.1, Dolby Pro Logic,
MPEG, even THX Surround EX decoding—
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