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Pioneer SX-850 (65W/Ch)

Original price $2,999.99 - Original price $2,999.99
Original price
$2,999.99 - $2,999.99
Current price $2,999.99

As features in one of our videos, this receiver has been in the box since the 70s! Incredible condition, and lots of upgrades!

Recapped Protection Board

Recapped Power Supply

Replaced Amp Board

Adjusted Bias

Adjusted FM

Cleaned all Controls and Switches

Replaced Lamps with LEDs

Replaced Speaker Terminals


The Pioneer SX-850 is a high power AM/FM stereo receiver with super-quiet phono equalizer and outstanding FM selectivity/sensitivity.

How do you know when to trust a stereo receiver to fill your musical needs?

Power output by itself is not much help, because unless your listening room is the size of a concert hall, a receiver with far less than concert-hall-sized output will do nicely.

The answer, obviously, is to put your trust in the circuitry the kind that you'll enjoy in the pioneer SX-850.

It delivers a continuous power output of 65 watts per channel, min RMS at 8 ohms, from 20 to 20,000 Hertz, with no more than 0.1% total harmonic distortion.

But even more importantly, it has the strength and finesse to handle that power with a healthy respect for musicality.

The SX-850 has a super-quiet phono equalizer in a 3-stage direct-coupled design to achieve wide dynamic range and +- 0.2dB RIAA equalization accuracy.

A FET in the Tone Control section, plus a 2-step frequency turnover switch for Bass and another for Treble, 2-deck monitor/dubbing, 2-system speaker drive, separable pre/main and more, mean further control versatility.

The superb FM/ AM section uses a dual-gate MOS FET and a 4-gang variable capacitor to boost sensitivity and selectivity, a PLL IC in the multiplex to improve stereo separation, and a special Integrated Circuit in the AM for still better reception and less noise.

It's the Pioneer SX-850 - the one you can trust to keep faith with your musical needs.


Tuning range: FM, MW

Power output: 65 watts per channel into 8Ω (stereo)

Frequency response: 10Hz to 50kHz

Total harmonic distortion: 0.1%

Damping factor: 25

Input sensitivity: 6.5mV (mic), 2.5mV (MM), 150mV (DIN), 150mV (line)

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

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

Speaker load impedance: 4Ω (minimum)

Semiconductors: 3 x FET, 3 x IC, 56 x transistors, 36 x diodes

Dimensions: 526.6 x 173 x 411.5mm

Weight: 19.1kg

Accessories: FM T-type antenna

Year: 1976