Features  
Year Made 1984
Original List Price $1195
Polyphony 6
Mulitimberal 1
Tones & Patches 64 tones
Type of Synthesis Analogue Synthisis (DCO's)
Effects Chorus
Sequencer or Arpeggio none
Drum Sets none
MIDI programmable 1-16 
Outputs 2 - Out L & R
Backup Cartridge
Options Cartridge, pg-200 programmer
Eprom Upgrade Availble from Analogue No.  

 
My Comments
I started taking my jx-3p on the road this year, but very reluctantly. I purchased this so I could leave the JX-3p at home. There are some definate plusses with the planet s. It has velocity, programmable MIDI channel, and the possibility (after an EPROM upgrade) of MIDI SYSEX! The one thing I will miss is the fast random LFO that the JX-3p has and the MKS-30 does not, but really the trade-off is in favor of the MKS-30. But after careful inspection the sound of the MKS-30 is VERY different from the JX-3p. The sound is warmer, but in some ways I really like the brittle sound of the JX-3p. There is no doubt that they are from the same family but more like siblings than twins. With the EPROM update (which I hope to buy in the next year or so) you can back up your patches with SYSEX, do parameter CC's on the fly and (I really like this !!) choose a split point for the module to play above or below. This is a great boon if you layer sounds with your controller but only want the mks-30 for the bass or whatever. There are some Mod's for chorus speed, but you have to give up the HPF, which I use alot for resonant sounds. I think this is a great purchase. It also came with the MC-16 cartridge with the factory sounds on it which is really cool.

Update Dec 2005 - Uh-oh one of the Oscillators went and the sound stays on!!!

Update March 22 2016 - 11 years later !! I finally have my baby back. Even though I ordered some chips and even replaced one of them, other chips went, and I realized I would have to replace them all. But last fall when I was fixing stuff I realized I had lots of 80017 chips maybe I could try the acetone bath again. I broke 1 chip pulling it out and one was a clone, but I wanted to remove them all so I could put sockets in. It was REALLY difficult, but I saved 3 chips and had 4 from the Juno. I bought sockets from China and they took FOREVER to come in. Today I put in the sockets and tried some chips. 5 of 6 worked, I tried another and my MKS-30 was back. There are some really cool sounds on this, I can't wait to start using it more.

 

I rate it 
I bought it for 225$ c
I owned it from Apr 2004 - present
Current PrePay value 198$ us
condition of my keyboard
cosmeticaly There are a few scratches on the front.
electronically Everything is working graeat.
Status
2012:It is set up and in the rack but a second oscillator has died. I now need many D80017 chips!

2010: set up with the other keyboards in the basement. Still broken but I have D80017 chips coming ...

2008: I at the moment have it set up in my dining room! I am gearing up for a live Beker show, and am practicing as much as possible. But this unit is always powered down, I am saving up for some new osc chips then we will have our planet s back in action.

2006: There were quite a few sounds I really liked on this unit, and I really wanted to play with it to make more. Then one of the Osc went, then I moved and there wasn't room for much. I will make the repairs to it, but it will have to wait till I have a place to do them.


 
Resources

FTG - notes tips and many Docs including manuals for the whole mks line !!
yahoo groups - I believe this one was started by the same guy from the FTG website