Pioneer SA - 7500

                           Pioneer SA - 7500 Stereo Integrated Amp (1976)

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The Pioneer SA-7500 is a 2-channel integrated stereo amplifier with inputs for two turntables, a tuner, auxiliary source and two tape loops. This unit has been professionally restored and is in excellent, “better than when new” operating condition.

Description from 1976:

Pioneer believes in music. And when a Pioneer product like the SA-7500 integrated stereo pre/main amplifier reaches the production stage after months of refinement, you can be sure it stresses musicality above all else. Handling creative musical information requires as much or more precision as is needed in today’s most sophisticated measuring apparatus and communications systems. This is why Pioneer is not simply an expert in modern electronics but a respected high fidelity audio specialist as well.

The SA-7500 bears this out. It has all the latest circuits and facilities, including a precision phono equalizer and extra-versatile tone control section. And it has a higher power rating than most pre-main models in its class. Continuous power output of 40 watts per channel, min. RMS at 8 ohms from 20 Hz to 20 kHz with no more than 0.3% total harmonic distortion.

Power Amplifier – The SA-7500 employs high reliability NPN and PNP silicon power transistors. Together with the differential first stage, all stages are direct coupled in a pure complementary OCL circuit configuration. Careful circuit design and selection of components results in a wide output bandwidth.

Precision Tone Control Functions – Conventional Bass and Treble controls are each
provided with Turn Over switches for selecting the frequencies at which the
controls take effect. A convenient Tone switch is also included which permits a
flat frequency response to be obtained regardless of the tone control settings.

Close RIAA Equalization – RIAA deviation, which governs record
playback fidelity, is reduced to very close tolerance by stringently selected
equalizer elements. A dual DC power supply system is also employed to provide
increased acceptable input volume, resulting in expanded dynamic range and
faithful record performance at low distortion

Protection Circuit – Electronic circuitry and a relay are combined in a
fast action protection circuit which guards transistors and speakers from
damage in the event of defective connections, such as speaker terminal
shorting. When DC current appears in the output, the output circuit is
instantly opened. The protection circuit also performs a muting function when
the power switch is operated.

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All units are sold with a 90 warranty day period in which you can exchange them for full the purchase price.  Please refer to our Return Policy for full details.  

Specifications:

• Power output: 40 watts per channel into 8Ω (stereo)

• Frequency response: 10Hz to 50kHz

• Total harmonic distortion: 0.3%

• Damping factor: 25

• Input sensitivity: 7.5mV (mic), 2.5mV (MM), 150mV (line)

• Signal to noise ratio: 65dB (mic), 70dB (MM), 90dB (line)

• Output: 150mV (line), 30mV (DIN), 1V (Pre out)

• Semiconductors: 2 x FET, 35 x transistors, 21 x diodes

• Dimensions: 420 x 150 x 345mm

• Weight: 12kg