Pioneer SA-500 (1969)

 Pioneer model SA-500 (1969 - 1972) 44 watt Solid State Integrated Amplifier

This is an efficient medium-range pre/main amplifier built to very high specifications for this size of unit. It has a set of controls, inputs and outputs for versatile operation of speakers and tape recorders. Main amplifier total power is strong at 44 watts at 4 ohms. Circuitry is all solid state and includes low-noise silicon transistors. For those who want to enjoy full stereophonic realism the SA-500 is the set.

 Features of the SA-500

Excellent Preamplifier Performance

The low-noise silicon transistors are included in the preamplifier section and are vital for the very best signal-to-noise ratio and distortion free sound. Distortion at 44 watts is less than 0,5% at 1kHz IHF

Truly precise Tone Controls

Unlike most amplifiers, in which tone control is only approximate, the SA-500 offers truly acurate tone control through individual bass and treble. Signals really come out as you want them.

Powerful Main Amplifier

The main amplifier section puts out 36 watts in music power at 8 ohms with distortion less than 0,5% at 1 kHz (IHF). That will give you room-shaking performance where and when you want it. It has two sets of auxilliary inputs to make it a very versatile part of your stereo system.

Exceptional Flexibility

The SA-500 is fully equipped with speaker outputs, tape recording/playback connector, loudness contour and astereo headphone jack.

Specifications

Audio Section

Circuitry:  Quasi-complementary single ended pus-pull circuitry

Music Power Output:  44 watts at 4Ω;  36 watts at 8Ω

Continuous Power Output:  16 W/16W at 4Ω;  13W/13W at 8Ω

Continuous Power Output (both channel driven):  12W + 12W at 4Ω;  10W + 10W at 8Ω

Total Harmonic Distortion (IHF):  below 0,5% at 1 kHz

Frequency Response:  20 Hz to 50 khz ±1 dB (Aux)

Power Bandwidth:  20 Hz to 40 kHz (distortion below 0,5% constant/IHF)

Signal-to-Noise Ratio (volume max; tone flat, at the rated output)

Phono :  75 dB

Aux : 90 dB

Inputs and Gain, Input Impedance (1 kHz):

Phono : 2,5 mV/47 kΩ

Tuner, Tape, Aux : 200 mV/10 kΩ

Damping Factor:  Better than 40 at 8 Ω at 1 khz

Output Terminals and Jacks:

Speakers : 4 to 16 Ω

Stereo headphone jack,

Simultaneous tape recording jack,

Tape rec/play connector, DIN standards

Phono Equalization Curve:  NFB type RIAA

Tone Controls:

Bass : -13,5 dB to +13 dB (at 50 Hz)

Treble : -11 dB to +8 dB (at 10 kHz)

Loudness Contour (switchable On/Off):  +12 dB at 50 Hz ; +5,5 dB at 10 kHz (at volume level of -40 dB)

Residual Noise:  less than 0,7 mV at 8Ω (volume minimum, tone flat)

General Sction

Power Supply:  Full-wave rectifier using silicon diodes

Line Requirements:  110, 117, 130, 220, 240 volts AC; 50/60 Hz

Power Consumption:  65 VA, 55 W (Max)

Dimensions (W x H x D):  330 x 118 x 313 mm (13" x 4-5/8" x 12-5/16"

Weight:  6 kg (13,2 lbs)