Pioneer SX-850

 

Pioneer SX-850 Front

 

This classic receiver the Pioneer SX-850 was made from 1976 to 1977 and, while not the top of the line, it was one of their higher end offerings. It has the tradition mid to late 70's styling that is easily recognized as Pioneer. The silver face, wood case and amber lights are all characteristic of Pioneer receivers of that time.

 

Pioneer SX-850 Knobs

 

You'll be hard pressed to find someone that doesn't like the SX-850. It really epitomizes what vintage audio is all about. The great look, quality build and above average performance make it a fantastic receiver for someone wanting to build a good quality vintage system. It's rated at 65 watts per channel but most agree that is probably low.

 

Pioneer SX-850 Meter

 

It phono stage and bass response are also known for being top quality. Hook a turntable up to this receiver and you won't be disappointed. The SX-850 isn't rare. Pioneer made and sold tons of them. That's a good thing if you're looking for one. Still, demand is so high for these receivers that price have been steadily rising in the auction market over the last few years..

 

Pioneer SX-850 Inside

 

The circuitry inside the unit is nice, clean and organized.  Here's part of the Pioneer advertising information from the 70's:

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.

 

Pioneer SX-850 Inside

 

Here are some of it's other features:

  • No more than 0.1% total harmonic distortion.
  • Super-quiet 3-stage direct-coupled phono equalizer
  • FET in the Tone Control section
  • 2-step frequency turnover switch for Bass and another for Treble
  • 2-deck monitor/dubbing
  • 2-system speaker drive
  • Separable pre/main
  • Superb FM/ AM section with dual-gate MOS FET and 4-gang variable capacitor
  • PLL IC in the multiplex to improve stereo separation
  • Special Integrated Circuit in the AM for better reception and less noise.
  • AUX input

 

Pioneer SX-850 Back

 

When the SX-850 was introduced Pioneer's top of the line receiver was the SX-1250. Just a couple years later it introduced the legendary SX-1980, one of the most powerful receivers ever made. Of course, if you want a true monster receiver, the SX-1980 is occasionally available on the market for a few thousand dollars or more. For those of us with more modest budgets the SX-850, SX-750 or SX-950 are great choices.

 

Pioneer SX-850 Ad

 

As I mentioned above these receivers are extremely popular so demand is high. Prices reflect that high demand. I recently saw a completely restored SX-850 sell for $750.00. That's the very high end of the price range though. In general you can get a really nice Sx-850 for around $400.00. If you're not too concerned about aesthetics then you can get a functioning 850 for even less. Parts are plentiful so if something goes wrong you can always get it fixed. If you fond a good deal on one don't pass it up.

 

Vintage HUGE Pioneer SX 850 VGC tested working awesome 85 10 and HEAVY
Vintage HUGE Pioneer SX 850 VGC tested working awesome 85 10 and HEAVY $435.00
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Pioneer SX 850 Stereo Receiver Parting Out Faceplate Pushbottons End Panels
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Pioneer SX 850 AM FM Stereo receiver
Pioneer SX 850 AM FM Stereo receiver $630.00
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There's a great video of a resto on a Pioneer SX-850 below. It's long but worth a watch if you're interested.

This entry was posted on Tuesday, July 29th, 2014 at 11:04 am and is filed under Pioneer, SX-850. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

14 comments

 No.1 
Benhai Zhang:

Hi, what speakers do you used for this receiver? I’d like to get a same pair. I have the chance to get a Pioneer SX-780. Would like to know what speaker to go with it.

Thanks!
Ben

October 1st, 2014 at 5:07 pm
 No.2 
Ray ivey:

Hay I just brought one of these from a thrift store I plug it up before I brought it everything seems to work won’t know until I hook turntable and speakers up to it

January 8th, 2015 at 6:36 pm
 No.3 
Ray ivey:

Want to know if I did the right thing buy Bing it seems like it’s in good shape only paid 20.00 bucks for it

January 8th, 2015 at 6:42 pm
 No.4 
raiko:

$20 is a steal! A couple knobs for an SX-850 will run that much.

January 29th, 2015 at 1:16 pm
 No.5 
DelRay:

I bought one of these for $825 and another for $550 and would buy any that you have for $500 all day long. The European market will buy these for $1000 US and I am happy to sell em for that!

February 7th, 2015 at 3:21 am
 No.6 
Judy:

I have an SX-850 for sale

February 20th, 2015 at 10:02 am
 No.7 
sskowfoe:

you really seem to know your stuff, and ive really been looking for someone to steer me in the right direction, i have a sx 950 that needs a good tune up. Kinda of like what your doing, Can u help me? It was my first baby.. Thanx Steve

February 23rd, 2015 at 4:18 pm
 No.8 
Forrest:

What is the best receiver in the sx series

February 14th, 2016 at 4:16 pm
 No.9 
Doug H:

I have a Pioneer SX-850, mint and mint working condition for $500.

October 15th, 2016 at 8:44 pm
 No.10 
Mike Svendsen:

Any chance I can get you to some maintenance om my sx-850? I bought it new in 1977 but it’s not been on for quite a few years. I would like to get back into my vinyl collection. You don’t happen to work on Dual turn tables do you. A reply would be nice – Thanks

Mike

October 18th, 2016 at 10:52 am
 No.11 
raiko:

Where are you located? Maybe there is a good technician near you. They are expensive, and risky, to ship so finding someone local is the best bet.

October 18th, 2016 at 11:00 am
 No.12 
Charlesb:

#5:. U’d buy one for $500?
Hmmm. I been using one for about 10 years. Not a lot.. but regular…

December 24th, 2016 at 11:27 am
 No.13 
Rip:

Classic system for sale. Pioneer SX-850 Receiver,harmon/kardon hk200 xm casette deck, Sanyo direct drive TP 1012 turntable, 2 Kenwood KL-777 4way floor speakers. Receiver,cassette deck,turntable all in original boxes/packaging along with diagrams and schematics.

January 30th, 2017 at 11:18 am
 No.14 
gary:

Hi My name is gary I would like to talk to you I have some older receivers new in box never played. can you send me a number so we can talk Thanks.

February 20th, 2017 at 5:28 pm

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