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, 2014 @ 4:27 pm
Anyone with an MKS-70 or a JX-10 should check out Frederic Vecoven's re-built firmware. It's a labor of love for this guy, not a vocation, but he has sorted out all the MIDI implementation issues and even added synth features (and arp features, to the JX-10). Go have a look at, and get the most out of your JX synth. Disclosure: I bought the upgrade at full price; Mr. Vecoven has not compensated me in any way for this testimonial. I'm simply a satisfied customer who would like to see this product gain the notoriety it deserves.
June 25, 2014 @ 1:30 pm
I've found out that Harold Budd used the MKS70 on the Luxa album. Now I like this synth even more!
fabian g
April 29, 2014 @ 10:46 am
I own the Mks70 and Jx10 and stack them for super analog stacks of sound. The PG800 programmer is an absolute must have for either of these synthesizer's because the parameter access will send you crazy if you have to enter them one at a time.

I do not understand why these synths can be had for very little money because they are amazing sounding machines.
If you want a synth that is capable of classy analogue strings and clunky bass and fab poly sounds then just buy a jx10 with programmer and it will take you to many great places in sound.
5 out of 5.
Desperate Dan
April 25, 2014 @ 8:51 pm
Amazing Hollow Sun have made an mks70 bank for Kontakt which is super awesome.
Hollow Sun and Hideaway Studio make the best Kontakt Banks around.......check em out folks.
w.t. salmela
January 23, 2014 @ 4:59 pm
The JX synths have a round and pleasant overall sound. The oscillators can't get very aggressive. But you need those soft pads and stuff anyway and this is where you get them. Very espressive poly analogs.
I sold my JX-8P and kept the PG-800 for MKS-70 but I didn't like the dual architecture of the super JX at all, so I didn't bother to program it like I used to do with my old JX-8P. Ended up selling this too.
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Rated 3.95 (283 Votes)

  • 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
  • Images from

    Additional information provided by JC CUTZ

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