Pioneer qa 800 a brochure

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PIOIEER '

A four-channel integrated amplifier for the creation of a living presence
sound field from a variety of four-channel program sources.

Mm x

_. 9. mm

omega

This new Pioneer integrated amplifier is your musical passport
to the stunning adventure of tour-channel stereo. A total capa-
bility unit that provides up to 204 watts of musical power at4
ohms. the QA-aoOA permits the creation at a brilliant concert
hall acoustical iield in your own listening room without the
additional cost oi multiple stereo accessories. Its total oi tour
amplifiers. and matrix decoding circuitry. means that you may
create tour-channel sound irom any matrixed tour-channel
source on the market, as well as discrete four-channel sources
and conventional two-channel records and tapes. The (DA-800A,
thus. is capable oi decoding the popular SQ matrix records. as
well as many other diiierent tour-channel matrix systems. al-
though none at these systems have distinct compatibility. And
because of this versatility. it becomes a solid sound Investment
for the luture. The rich sound of tour-channel stereo is here now.
And Pioneers QA-800A gets you into this total sound picture
better than any 'other unit of its kind or price.

(U) PIONEER

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GA-BDDA

SO AND REGULAR MATRIX DECODER

Today there are almost as many matrix tour-channel systems as there are
manuiecturers-an uniortunete situation since none at these matrix systems
are compatible with the other. Pioneer's choice at matrix systems tor the
new OA-OOOA Vila based on research Into III the many kinds OI matrix
systems-and the decoding circuitry employed in this unit goes a long way
toward solving the iour~channel matrix contusion tor the audio ian.
Pioneer's matrix system Is actually a double system. One decoder is the
Regular Matrix type, which enable decoding at most itinds oi systems now
available. The other is the so system decoder with unique irontloack logic
circuit. tor exclusive tour-channel sound reproduction oi so matrix system-
encoded sound program. This trout/back logic circuit, employed in the
GA-BOOA. produces clear sound too ution and quite natural sound repro»
auction. The OAMA has add ional versatility, too, beyond its matrix
decoding iunction. You may use this unit tor discrete tour-channel program
sources. and also lor conventional two-channel sound sources. All in ell.
theres really not a matrlxed tour-channel sound source now on the market
that can't be used with Pioneer's OA-GOOA.

WIDE DYNAMIC SANGE HEADAMP SECTION

The OA-BOOA's head amp ieatures an extremely wide dynamic range owing
to its low noise. long-lite silicon transistors and two-stage direct coupled
circuit NFB equalizer. The result oi matching these components Is ex-
tremely low noise and a wide dynamic range. plus outstanding staoility.
CLICK STOP TYPE TONE CONTROL

Use oi low noise silicon transistors and click stop tone controls means that

precise settlnp ol all controls is possible with the OA-woA. Separate con-
trols lor both ironi and rear speakers. when the unit is used ior tour-chan-
nel stereo. are also provided.

BIG POWER AND WIDE POWER BANDWIDTN

The power amp section oi the OA-sooA lectures a quasi-complementary
single ended push-pull circuit utllixing ell high-periormance silicon trans-
istors. The unit provides a generous continuous power output oi 20 watts
xl i4 channels driven at 5 ohms). and is complemented by a remarkable
I5 to 50.000: power bandwidth (IHF. 9 ohms. 4 channels driven).

EXCLUSIVE PIONEER LEVEL CONTROLS

In addition to the master volume control oi the OA-wolt. which adjusts the
level oi all tour channels simultaneously. the unit is provided with tour
separate level controls, one Ior each channel. These control: make overall
balance adjustments extremely easy. and they are especially useiui when
trout and rear speakers oi diilerent sensitivities are used. The controls also
permit balance adjustments ior listening from any part oi the room. not only
the exact center.

VEfiseTILE INPUT TERMINALS

The QA-BOOA Includes two sets each at Phone, Tape and Aux inputs. with
the two Phono connections it is possible to compare two ditierent stereo
cartridges. The pair oI tap puts allows you to use both open real and
cassette decks simultaneously and accomplish tepe-to-tape duplication with
ease. There is also a rear speaker selector that permits a choice oi two
pairs oi speaker systems.

SPECIFICATIONS
SEMICONDUCTORS

FETs: 2
Transistors: 85
Diodes: 15

PHEAMPLIFIER SECTION
Output Voltage: .5va irated output)
Harmonic Distortion: Less than 0.08%
Frequency Response: 20 to 40.000Hz. tIdB
Input Sensitivity/Impedance PHONO 1 MAG; 2.5mV/50 Kohms
(tKHz. tor rated output): PHONO 2 MM: 2.5mV/50 Kohms
TUNER. 200mV/Ioo Kohms (4 CH)
Aux 1. 2; 200mVI100 Kohms (4 CH)
TAPE MONITOR 1. 2: ZOOMV/IDO Kohms H OH)

Recording Output: TAPE REC 1. 2 (pin jack), 200mv (4 CH)

BASS Control: -10dB. +lOdB/100Nz
TREELE Control: -lod5. +10dBI10KHz
LOW Filter: -10dB/50H2 (MB/00L)
HIGH Filler: -IOdB/10KH2 (GdB/OCI.)

Equalization Curve:
Loudness Contour:

PHONO: RIM S.T.D.

+1idB/100Hz. +1dBItoKI-iz with volume
control set at -iodB position.

-2in3

PHONO; More than 8MB

TUNER. AUX; More than Soda

POWER AMPLIFIER SECTION

Music Power Output (MP): 204 watts (4 ohms). I44 watts ta ohms)
Continuous Power Output 34 watts+ 34 watts/{M wetts+al watts (4 ohms)
i1 KHZ 2 channels driven): 27 watts+21 watts/21 waits+27 walls (9 ohms)

Mutlng:
Hum and Noise (IHF).

Continuous Power Output
(IKHI. 4 channels driven):
Power output in the range
at 20 to 20.0sz

(2 channels driven):
Harmonic Distortion:
Intermodulaticn Distortion:
Power Bandwidth (IHF)

(2 channels driven):
Power Bandwidth (lHF)

(I channels driven): less than 0.5%)
Frequency Response: 8 lo 70,000l-iz. tide
Input Sensitivity/Impedance 500mv150 Kohms
(IKl-tz. continuous power

24 watts x 4 (4 ohms). 20 watts x 4 (a ohms)

23 watts+23 watts/23 watts+23 watts (5 ohms.
harmonic distortion less than 0.5%)

Less than 0.5% (continuous power output)
Less than 0.5% icontihuous power output)
to to 50.000Hz (3 ohms. harmonic distortion
ion than 0.5%)

15 to 50.000H1 (9 ohms. harmonic distortion

output):

Speakers: 4 to 16 ohms
Damping Factor: 40 (s ohms. IKHz)
Headphone Jacks: Front and Rear
MISCELLANEOUS

Power Requirements: USA. and Canada model; 120V 60Hz only or
HOV. 120V, 13W, 220V. 240V (switchable)
50-60Hz

290 watts (max)

Switched... 1. Unswitched . . .I

16-5/IBNO it 5-7/1? x lad/MD) inches
430M) x IsltHI x 337(Dlmm

Without package 24 Itho.skg

Pin piug...s. Speaker plug...6.
Polishing cloth . . . 1. Connecting cords.
Operating Instructions 1

Power Consumption:
AC Outlets:
Dimensions (overall):

Weighi:
Furnished Parts:

NOTE: Specilicelione and design subject to possible moditicetion without notice.

M PIONEER

HDNIIH ELECTRONIC GDRFOHATION / 15-5. A-chome. Dior-nonrNisI-ii, Ohoarku. Tokyo 143. Japan
U S PIONEER ELECTRONICS CORPORATION / 17B Damn-tern: Road. Cariaoauc. Naw Jamey D7072. LLS A
PIONEER ELECTRONIC (EUFICIFEI NV. / Noordariaefl BB. 2030 Ancwern. Belgium

50.000A-F-e-72 Printed in Japan