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Marantz 4270

Stereo and Quadradial Receiver (1976-77)

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Marantz 4270


The 4270 is a high quality stereo and quadradial 4-channel receiver developed by Marantz.

The unit incorporates Marantz's exclusive Vari-matrix circuit which simulates 4-channel sound from normal 2-channel stereo programs, and is capable of reproducing 4-channel sound from any matrix encoded source.

The 4270 will also reproduce any discrete 4-channel program as well as regular stereo and monaural programs.

An optional plug-in decoder adapts the unit receiver for any specific matrix system such as Columbia's SQ.


Tuning range: FM, MW

Power output: 25W/ch into 8Ω (quadraphonic)

Frequency response: 20Hz to 20kHz

Total harmonic distortion: 0.3%

Damping factor: 45

Input sensitivity: 2.2mV (MM), 150mV (line)

Speaker load impedance: 4Ω to 16Ω

Dimensions: 17-21/64 x 5-25/64 x 14-3/8 inches

Weight: 40.2lbs


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Reviewed Mar 20th, 2015 by waluigi

Can only compare it beside a 2245, 2220, and 1060 here. The 4270 is by far the best sounding. Running it into a 150 watt power amp and really enjoying it!!



re: 4270

Just bought 4270 on Craig's list for $250. Drove 50 miles out of Chicago onto a dirt road. Thought I was a goner. Great guy, love the reciever. Thanks for the manual...

re: 4270

Thanks for the download!!!

re: 4270

i FOUND a marantz 4270 left out on the sidewalk early one morning while i was out riding my bike
took it home plugged it in , and it worx , has mild hum , nd rite channel is a LiL weaker then the left but still hear sound from it. At higher volumes levels out .
i am curently use Canton ERGO 22 DC speakers sitting on top of receiver ,
the separation is unreal , can't wait to spread the speakers apart

re: 4270

I have a marantz 4270 receiver. The lights go on when I power up but I don't get the "Clicking sound" it usually makes. Any suggestions?

re: 4270

This sure beats looking for the paper manuals and will be easier to find, now that I have it on my digital Household file. Bill H Toronto ON

Marantz 4270

I just acquired a Marantz 4270 and I almost sent a person on EBAY $15 for the manuals you provided free of charge! Thanks for a great service.


I recently acquired a Marantz 4270 amp that has a couple of minor problems (lights, some static, possibly needs a tuning belt). Does anyone have a good source of either repair of parts. I live in SC at this time and do not know of any local sources.


great site! and thanks for the manuals! just got a free marantz 4270 in great cosmetic shape and is working but with some issues needing fixed. maybe i can figure it out with these great manuals!

billinrio's picture

Marantz 4270 manual

Thanks so much for making this manual available. I couldn't find it anywhere.

Marantz 4270

Excellent Site, Highly recommended, Thanks

Marantz 4270

Thanks you so much had trouble finding my own !! great site !!


Thanks for the download. They have helped me tremendously.

This website is not affiliated with or sponsored by Marantz. To purchase 4270 spares or accessories, please contact the company via their website or visit an authorised retailer.