Pioneer SA-9500 Service Date finished:12/14/21 Initial assessment: -Cut AC cord -Bad Power switch -Intermittent audio output in both channels -Hum at output from P. S ripple -Failed power indicator bulb Service notes: -Closely checked soldering joints on all boards with high powered magnifying glass and re-soldered 10-15 suspect joints -Replaced AC Power Cord -Replaced Power switch with high quality ALPS TV-4 Switch -Thoroughly inspected all boards for burning or corrosion: good -Upgraded all electrolytic caps on Amp board to high temp nichicon low esr -Upgraded all electrolytic caps on Power supply board go slightly higher capacitance value nichicon low esr, for improved ripple filtration -Buffed/cleaned output relay contacts -Replaced failed power indicator bulb with wired red led -Cleaned and exercised all controls, switches, and trimmers three times then applies finish oil to prevent future oxidation -Calibrated amp dc offset, and bias -Final bench test: ran unit 3hr From the owner's manual:... The Pioneer SA-9500 does deliver an unusually large continuous power output of 80 watts per channel, min RMS at 8 ohms from 20 Hertz to 20,000 Hertz with no more than 0.1% total harmonic distortion, but it also ensures that even when operated at low volumes the performance retains a crisp, sparkling clarity. The dynamic response and reliability of the SA-9500 are matched with a flexibility of use you'll rarely find in this price range.
Tone control versatility, for instance: both the bass and treble sections have 3-position turnover selection and there's a tone on/off switch for "flat" response at a touch. Specifications - Power output: 80 watts per channel into 8 (stereo) Frequency response: 7Hz to 40kHz Total harmonic distortion: 0.005% Damping factor: 30 Input sensitivity: 6mV (mic), 2.5mV (MM), 150mV (line) Signal to noise ratio: 65dB (mic), 70dB (MM), 90dB (line) Output: 150mV (line), 2V (Pre out) Semiconductors: 2 x FET, 54 x transistors, 26 x diodes Year: 1975-79.The item "Pioneer SA-9500 Stereo Amplifier, Pro Refurbed, Recapped, Upgraded" is in sale since Wednesday, December 15, 2021. This item is in the category "Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps". The seller is "andyexcuse" and is located in Andover, Massachusetts. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, Sweden, South Korea, Indonesia, Taiwan, South africa, Belgium, France, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Pakistan, Paraguay, Reunion, Uruguay.