Roland MKS-30 PLANET S

Roland MKS-30 Image

The MKS-30 is a MIDI rack module version of the JX-3P with some enhancements. It is an analog synth with two DCO's (digitally controlled oscillators) per voice, six voice polyphony, it responds to velocity, and has 64 internal and 64 cartridge memory patches. The typical assortment of analog filter, envelope, LFO and oscillator sections are here with easy and straight-forward programming. It can be controlled by the PG-200 programmer for easier hands-on tweaking. Never quite gaining as much popularity as the JUNO series synths, this synth is as good as inexpensive analog gets! It is used by Cirrus.

Lookup Roland MKS-30 PLANET S Prices

The link above will take you to an eBay search for this synth to see active listings with more images, specs and information. If you don't find it there, try looking in our forum marketplace. Our marketplace gets thousands of visits every week so make sure to check back often if you want to buy or sell a synth.

Related forum topics


Are you looking to buy or sell a Roland MKS-30 PLANET S? Post an ad in Gear For Sale or a request in Gear Wanted. For spare parts and repair services check out Gear Services & Other Goods. Our forums also has a Buyer’s Guide section where you can ask for advice on buying synthesizers.

16 Visitor comments
Chris Poacher
April 23, 2013 @ 7:20 pm
I still have my MKS-30 and I love it with the PG-200 programmer, it's superior in most ways especially having 128 memories with the MC-16 cart, but I miss the punchy clarity I got from the JX-3P rather than the noisyness I get now. Yes it has character in abundance, but it gets used less that it should. If anyone disagrees and has owned both and can help me make my MKS-30 less noisy, then please get in touch so I can fix it and use it as much as I would like to. -
Chris Poacher
April 23, 2013 @ 7:19 pm
I have to reluctantly agree that the JX-3P sounds better than the MKS-30, I've owned both and eventually sold the JX-3P due to lack of studio space and regretted it. I did have time to do some A-B comparisons before I sold it. Yes the MKS-30 sounds very similar but the output is quieter and has far more background noise than the 3P ever did [and yes the output switch is set to H].
Brand 80
December 19, 2012 @ 6:24 am
Just need to comment that someone said that the JX3p sounds better than the MKS-30. Are you joking? Or do you have cloth in your ears?
Brand 80
December 19, 2012 @ 6:21 am
I dont know why people think the MKS-30 is a JX3p. It's a GR-700 in rack. They did not use the JX3p as basis for the enhanced rack version due to all kinds of horrible design mistakes in the JX3p. Thus the MKS-30 is a completly different synth (read 'better' synth).
April 21, 2012 @ 2:47 am
After i got the voice chiped pelted out, I just confessed the actual MKS 30. Way far nastier than Jx3P. Totally different kind of catagories. However im facing new problem, the power just went off , can u help me to fix this. I'm sure it must be sumthin' wrong with the transformer or PSU area but I don't know exactly where, cuz I don't have a basic knowledge of electricity.
Post Comment!
VSE Rating

It’s Good

User Rating

Rated 3.5 (201 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
  • Audio Clip 1 - Single hit sounds from the Planet-S MKS-30 Synthesizer.

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

  • Specifications
  • Polyphony - 6 voices
  • Oscillators - 2 DCO's (digitally controlled oscillators)
  • LFO - YES
  • Filter - cutoff / resonance / envelope amount / key follow
  • VCA - 1 ADSR envelope generator
  • Memory - 64 internal / 64 cartridge
  • Keyboard - none
  • Control - MIDI
  • Date Produced - 1983
  • Resources & Credits
  • Images from

Errors or Corrections? Send them here.