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Pioneer SX-1280

AM/FM Stereo Receiver (1977)

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Pioneer SX-1280


Tuning range: FM, MW

Power output: 185 watts per channel into 8Ω (stereo)

Frequency response: 5Hz to 80kHz

Total harmonic distortion: 0.03%

Damping factor: 30

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

Signal to noise ratio: 80dB (MM), 95dB (line)

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

Speaker load impedance: 4Ω (minimum)

Semiconductors: 5 x FET, 6 x IC, 67 x transistors, 50 x diodes

Dimensions: 556 x 186 x 461mm

Weight: 28.7kg

Accessories: FM T-type antenna



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Reviewed Jun 17th, 2019 by hv1949

The best receiver I ever have.

Reviewed Jul 03rd, 2018 by RTM

Everything that's great about the venerable SX-1080, just more of it! Not quite as heavyweight a performer as the iconic SX-1980, but more than enough for most enthusiasts. It sports a great tuner, great amp, quiet preamp and two excellent (one adjustable) phono sections. If you have an Owner's Manual, please scan and upload it! Yet another Pioneer SX- for the ages!

Reviewed May 08th, 2016 by curioustech

I have own this for quite a while now. Power, reliability and smoothness and massive heat sinks, I can only add (a) Bravo to Pioneer Electronic geniuses (b) I wish to go back to the products of the past that is pure unadulterated and organic music (not Synthesized)

Reviewed Feb 24th, 2016 by suitekids

I'm a proud owner of a SX-1280, one of the best receivers ever made along with the SX-1250 and I have one of those also. I also have an SX-980 as well. These are truly works of electronic art from the late 70's. They really don't make them like this anymore unless you are spending mega-bucks. If you can find one of these don't hesitate to grab it, awesome piece of Pioneer high end

Reviewed Jun 20th, 2014 by turntabledepot.com

Outstanding well built example of Pioneer's best! With plenty of headroom power to spare - a very user-friendly and intuitive design that is timeless. Very proud to be an owner of one of these - and plan to keep it for a very long time. If you find one in decent to excellent condition - BUY IT!

Reviewed Apr 22nd, 2013 by hassan1280


Reviewed Feb 26th, 2013 by dgoulet

Totaly awsome receiver



re: SX-1280 KC Owner's Manual

Hi everybody, as promised, I found a clean original of the SX-1280 Owner's Manual and I've scanned and uploaded it to the HFE. It's a HIGH-Resolution scan and it's fine with me if the folks at HFE would like to delete the Low Res version. I hope this helps my fellow Pioneer Loyalists. Now I hope that there's an Owner's (and Service) manual for nearly every SX Silver Era Receiver available. Best wishes to everyone...

re: SX-1280 KCU Owner's Manual

I uploaded the one .pdf copy of the Owner's manual that I could locate. I'm working on finding/creating a higher resolution scan, but I thought that this one wasn't all that bad (once it's scaled 1:1 for an 8.5x11.5 sheet of paper) but I do acknowledge that it could be better. As I stated for my upload of the SD-1000 Owner's manual, I'd be HAPPY for someone with a better (in the SD-1000's case, a color .pdf as well as higher res...) copy of that owner's manual to upload it and it's fine with me if mine is deleted in order to make room for it. Thanks to the owner(s) of this site. You've saved my (and my gear's) bacon, MANY TIMES! Update: I've uploaded a new, high-res scan of a very clean original of the KC North American Owner's manual. I haven't done a thorough search, but I think that completes most, if not all of the SX-xx80 series. I'm still looking for a clean original (or scan) for the venerable SD-1000 Stereo Display Owner's Manual. If anybody has one, please consider uploading it. Thanks in advance...

re: SX-1280

Can I hook a SX 1280 with a president series 600 amp buy a b International together and if so how do I go about hooking this app to my SX 1280

re: SX-1280

You'd have to rig a "Y" connector from the preamp out loop and run one to the amp and the other to the 1280's amp input. Unless you don't want to use the 1280 amp (ill-advised, if it works; I'd default to the onboard amp over a lot of the competition, especially of that time period) and that should do it.

re: SX-1280

So, I dug my SX-1280 out of the attic so as to use it at a party and all it does is click after turning power on. It worked fine when I put it in the attic so I was really taken when it suddenly decided to do this when not even being powered. Awesome amp, so I don't want to get rid of it yet.

Anyhow, I am not overly savvy with electronics but have some capabilities and would like to find if someone knows where I should start to look.

As stated, I turn on power and it clicks some protective circuit about every 3-4 seconds. No sound is ever heard. The clicking sounds as if it is coming from the left side around the area between the metal top and the wood.

re: SX-1280

Downloaded the service manual for SX 1280, it will show only the first 41 pages and nothing after that!
Any suggestions.

re: SX-1280

The manual is split into 3 parts, service, schematics and additional service. You need to download all 3.

jcortopa's picture


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Thank you! The light in the darkness,HiFi Engine.

I was able to fix a Pioneer 1250 receiver gone dead a few months ago,with schematics from your library. Now its time again,a Pioneer 980 receiver this time,and fortunatly I have found schematics for that one too right here at HiFi engine. Sure hope it works out good as last time.

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