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CONT!

Stereo System Composition...

Connection Diagram

Connections

Front Panel Facilities ......e;00see002

Before Operation .

Operation

ENTS

Employing Tape Deck

Effective Operation

Employing PRE OUT & POWER IN Jacks...

Specifications

Conditions Frequently Mistaken for

Malfunction

FEATURES

Superior DC Balanced Circuitry

Differential amplifier circuits are employed inthe equalizer,

tone control, and power amplifier sections. Each amplifier

section is supalied by a balanced power supply systom that

assures excellent DC balance and stability, while nearly

climinating switching noise daring control operation,

High Power Output at Low Distortion

DDC stability is enhanced by the 2-stage dltferontial ampli

fier and pure complementary OCL citeuits are employed

for direct coupling of all stages. Constant current load c i r

'cuits are used in 2 locations an a large negative Feedback is

applied due to the high gain circuit composition. A wick

band high power output can be obtained with broad

dynamic range and low distortion.

Precise RIAA Equalization

Utwraprecision grade metalized film resistors (sputtering

procets) and styrene capacitors ate combined as equalized

ements. Deviation from the RIAA curve has been reduced

bby 10.24 in the frequency range of 30H2~ L5kHz. An FET

Is employed in the 1st stage differential amplifier and by

adopting a 3stage direct coupled SEPP circuit, input

impedance variation due to frequeney is minimized, High

ability is attained at low distortion, in addition to a greatly

expanded acceptable input lovel. Distertionless disc repro-

duction can therefore by enjoyed, even with a high output

cartridge and a dynamic music source containing large peak

inputs

Delicate Tone Adjustments

The Pioneer developed win tone control cireuit is applied

to the conventional Biss and Treble controls, Super-low and

super-high bands can be individually adjusted 10 provide

delicate compensation for such factors as room acoustics

and speaker and cartridge frequency characteristics. A Tone

switch is also provided which can be used to compare the

effectiveness of the fone controls

Reliable Electronic Protection Circuit

In event of speaker shorting or malfunction in which DC is

applied to the output, speakers and transistors are reliably

guarded by an electronic protection cireuit. This circult also

vets as a muting circuit when the power switch is turned on

and off

Accurate Volume Control Expands Adjustment

Range

The Volume control is equipped with a precision attenu:

itor of the type employed in measuring instruments

and

Dither high reliablicy equipment, Volume adjustment can be

easly performed when listening at low volume levels, tem

porarily reducing the volume, or employing a low input

level (high sain) power amplifier, The volume adjustment

range can also be expanded by employing the volume

control and attenuator switch in combination.

Phono 2 Jacks Provided with Impedance Selector &

Level Contra

'A convenient impedance selector switch (35k, SOKO,

7OKQ, 100k{1) and level control (0 ~ -12dB) are provided

for the PHONO 2 jacks for matching cartridge ourput

characteristics, comparison listening, etc

pe Switch for Easy Tape Duplication

By connecting 2 tape decks, the desired program only from

2 previously recorded tape can be ected and re-recorded,

The Duplicate switch also lets open reel tape be duplicated

onto cassette tape,

Audiophile Functions Incorporated

A PREJPOWER AMP selector switch plus PRE QUI and

POWER IN jacks are included. An external power amplifier

can be connected to the PRE OUT jacks to allow listening

Comparison and power amplification, This feature can alo

be employed for composing a multé-amplifier or + channel

system, A single SA-9900 can thus be used to set up various

kinds of audio sysiems,