Wednesday 26 August 2015

Pioneer SA-9500 Stereo Integrated Amplifier 1975-76

                                 Pioneer SA-9500 Stereo Integrated Amplifier 1976
                                              Information And My Photos

Pioneer believes in music. And if you do, too, you'll find a faithful friend in the new SA-9500; one of the most musically minded pre/main stereo amplifiers we've engineered.
It combines massive stereo output power with a delicacy of transparency; a rare blend in these days of lots of power at any cost.
In other words, we haven't simply beefed up the power section at the expense of the tonal quality, frequency response or other aspects so important to the sound of a high fidelity component.
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.
The 2-step high and low filters, the extra convenient tape duplicating switching system, multiple input source selection, 2-system speaker switching and much more mean first-class handling.
We believe in music. And we're sure that if you do, too, you'll believe in the all-new SA-9500.


  • Power output: 80 watts per channel into 8Ω (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
    Dimensions: 420 x 165 x 403mm
    Weight: 17.2kg
    Accessories: connecting cord, hex wrench, jack covers
    Year: 1976
  • "Made around 1975 - should still be running in 2035."  :)

Wednesday 19 August 2015

Pioneer TX-9500II AM/FM Stereo Tuner

Pioneer TX-9500II AM/FM Monster Stereo Tuner In Mint Condition

TX-9500 :
Pioneer introduced a line of tuners in 1975 that would set the style for its tuners for the rest of the decade.  The TX-9500 was the top of the line model and had a list price of just under $ 400.
It had superb performance specifications--so good in fact this tuner is sought out by avid Pioneer listeners and collectors.
But it is also the tuner's good looks and quality feel of its controls that makes this tuner such a pleasure to own and listen to even today.
It was sold again in 1976.
TX-9500 II : 
The TX-9500 II replaced the TX-9500 in 1977.
It had improved specifications but the price remained the same.
It was the top-of-the-line in a four tuner lineup.
It remained in production through 1978. 
More than two decades later is being snapped up by serious Pioneer 

Inside it's one of the most circuit-packed AM/FM tuners Pioneer have ever built. And outside it's one of the cleanest and most simple to use.
The Pioneer TX-9500 has a new streamlined look, logically-arranged switches and controls, and a scientifically-designed tuning system that makes it all look so easy.
But it's what's inside that counts: dual-gate MOS FETs and a 5-gang variable capacitor boost FM front end sensitivity to a superb 1.5uV (IHF). The FM IF has 7 ICs with differential amps, 4 ceramic filters (with 2 elements each) and a wide-band linear detector to pinpoint selectivity at 85dB or better and beef up the capture ratio to 1.0dB (IHF). Even in stereo the S/N is a super high 75dB, with total harmonic distortion of 0.2% at 1KHz.
Thanks to the PLL MPX (phase lock loop multiplex) demodulator, stereo separation stretches to a wide 35dB over the 50 to 10,000Hz range. Stability? Even in signal-weak or signal-strong areas your station comes in clean and fresh.
Planning to record off the air? Hit the switch for the built-in 440Hz test signal generator and check the output level against your deck's VUs for optimum adjustment before the music begins.


  • Type: Mono/Stereo Tuner
    Tuning Bands: FM, MW
    Tuning Scale: Analogue
    Sensitivity: 1.5uV (FM), 300uV (MW)
    Signal to Noise Ratio: 77dB (FM), 55dB (MW)
    Distortion: 0.5% (FM)
    Selectivity: 85dB (FM), 30dB (MW)
    Frequency response: 20Hz to 15kHz (FM)
    Output: 650mV (FM), 200mV (MW)
    Semiconductors: 5 x FET, 15 x IC, 12 x transistors, 19 x diodes
    Dimensions: 420 x 150 x 395mm
    Weight: 9.5kg

Pioneer TX-9500II
(1977 - 1978)
A nice stack of silver Pioneer and probably the other best of the1970s. The bigger TX-9800 came too late with down-sizing already lurking just around the corner.
Not on par with a Sony ST-A7B but the pricetag was quite different ! 
Like Sony's A7B, Pioneer's 1970s super-tuner was the F-26 which I'll soon bring it online since I have finally found its beautiful original japanese catalog.
Anyway - all about the TX-9500II technicalities and structure at the FM Tuner Info website