Roland MKS-70 Super JX

Roland MKS-70 Image

The MKS-70 is an identical rackmount version of the JX-10 synthesizer. Released in 1986 it combines two individual JX-8P synth engines for an outstanding warm and analog sound which is used in many modern studios all over the world. It comes with onboard effects like Chorus and Delay and offers a wider range of programming using the optional PG-800 Programmer. This programmer is highly recommended for those who will be programming unique sounds since editing from the rack-face itself is cumbersome and tedious. The MKS-70 has a "chase-play" function which allows programmable delayed repeats of voices from either of its tone modules. The chorus is either off, slow or fast. It is used by Überzone, Vangelis, Astral Projection and Josh Wink.

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15 Visitor comments
July 15, 2013 @ 6:50 am
There's no external input, which is a shame - the filters are the same as the Super Jupiter. I've owned a Super JX since 1988, and after 25 years of regular playing, twiddling, fiddling, noodling and a bit of hair pulling, I can honestly say that I have fully and completely mastered scratching the surface of this fine instrument. The rack is best mounted right in front of your playing position, as the front panel buttons and dial in combination with a PG or similar do provide a comprehensive control surface. It only take a bit of practice, but once you learn it's like riding a bike.
April 9, 2013 @ 2:54 pm
Does the mks70 have any input for running a signal through its chorus/fx or filter??
October 6, 2012 @ 3:30 pm
This baby is all over the TWIN PEAKS Soundtrack. I had always suspected it was the JX-8p. Last night I researched it and found out that a Sequential Circuits T8 controlled the MKS-70 with Midi thru to a Roland D-550 for additional layering. I've own all the JX synths and love them all!! My JX-10 was flawed so it's true what they say. You can get them so cheaply, but thats not going to last for long.
October 16, 2011 @ 8:03 pm
see here for PWM on a JX 10/MKS 70
October 16, 2011 @ 7:46 pm
My favourite synth of all time, period. Capable of convincing recreations of acoustic instruments, and any synth sound you can think of. Editing tones is straight forward, patch editing requires a bit of forward thinking. A PG-800 is pretty useful, but I use my Mackie C4 these days.
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  • Check Price
  • The link above will take you to an eBay search for this synth to see active listings. If you don't find it there, try looking in our forum marketplace or post a wanted classified.
  • Demos & Media
  • YouTube Thumbnail
    Roland MKS-70 demo
    by jdrukman

    Manual - Roland has made manuals for most of their products available as free PDF downloads.

    Patch File - Roland's original Factory patches for the MKS-70. There are several patches in .mid and Midi SysEx formats, for Macintosh and Windows/PC.

  • Specifications
  • Polyphony - 12 voices
  • Oscillators - 2 DCO's per voice (24 oscillators)
  • Effects - Portamento, delay, chorus
  • Memory - External memory cartridges
  • VCF - low pass and hi pass filte
  • VCA - 2 ADSR envelope generators per voice
  • Arpeg/Seq - NO
  • Keyboard - None, rackmount
  • Control - MIDI
  • Date Produced - 1986
  • Resources & Credits
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    Additional information provided by JC CUTZ

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