Roland JX-305 GrooveSynth

Roland JX-305 Image

The JX-305 is an awesome synth for electronic & techno musicians! It's like an MC-505 groovebox in a keyboard. All of the MC-505's excellent dance-oriented sounds are included, as well as 4MB more! Combining keyboard style patch synthesis & performance with Groove Approved dance patterns, sequences and phrases the JX-305 is a real dance production studio with 768 dance patterns, 256 User, 640 patches and 28 drum kits.

Perfect for live use with its massive 64 voices of polyphony, you can jam along with it while it's instantly playing a great techno/dance groove! Then grab anyone of the 9 real-time control knobs to start tweaking the filter, envelope, tempo, arpeggiator or LFO. All real-time edits, pattern changes, tweaks and keyboard playing can be recorded into its 8-track sequencer - a robust sequencer with quantizing and edit capabilities! If your bag is dance, trance and rave then this Groovesynth may be all you need! It has been used by Astral.

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45 Visitor comments
February 20, 2010 @ 2:37 pm
A great and completely underrated synth for making trance, electro and industrial. Yes the presets [beep] but the trick to getting great sounds out of this is by using the layering feature, effects and a little EQing from a mixer. It may be a rompler but this synth can get very usable bass, leads and arps. Ive used this for many shows over the last few years and never once had a problem.
Modular Jack
February 5, 2010 @ 1:32 pm
Great little keyboard. It is the one piece of gear I have never sold over 12 years of making electronic music. No it's not a Fantom or Motif but it has a ton of great bread and butter sounds, nice springey key action for programming drums and much better aftertouch than most other boards I've played with. The only thing I routinely feel it's lacking in is the number of outputs which can be a bit of a drag for live shows. Below's a video of me messing around with my Jx-305 (on the bottom) and a Juno 6. The drums and bass are all on the JX-305... Not a bad moog bass sound for a 15 year old ROMpler IMHO! :)
February 2, 2010 @ 11:13 am
It is plastic and plastic and a bit of metal.
The sound is pretty great.

You need additional audio sweetening/effects and multi track it or better yet, layer it with other gear.

The drums are really awesome IMHO and the sequencer as good as most hardware. Mmake a song or set on this and save them inside or to the small card in the back slot-transfer the sequence to the computer or the other way . In a mix this adds nice stuff. All alone it may be a bit thin due to the filters. Low tech? Yes, compared to VA synths that run you 2-4 k. Layering is the secret! Multitrack! Over dub..with a mixer and a few other pieces this is easily a good part of a set up that is worth while.

For gosh sake do NOT depend on this for gigs as it is about as roadworthy as a dozen eggs in a back pack!
Ronald Boykin
July 17, 2009 @ 8:05 pm
I still have mine after buying it on Ebay several years ago for $700! I think it's still worth it! It help me create all types of arrangements. I take the midi data and shoot it over to Logic or Sonar and record my guitar to it. If I don't want to deal with my computers I'll shoot a arrangement over to my VS-890 recorder and record my guitar. Right now there's one of these for sale on Ebay for $400!
July 12, 2009 @ 12:52 pm
"If your bag is dance, trance and rave"
That's pretty much all I've listened since 90's and this thing sounds like none of that (pre-1998 music). What brought me to this was the JX- name.

I don't have it but just listen to the filters in the demo. Wouldn't pay $25 for it. Room space is more valuable than that.
VSE Rating


User Rating

Rated 4.6 (1126 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.
  • Specifications
  • Polyphony - 64 Voices
  • Effects - 24 effects including reverb, delay, chorus, etc...
  • Memory - 640 patches, 28 rhythm kits
  • Patterns - 768 Dance patterns, 256 User
  • Filter - Digital real-time & midi controllable resonant low/band pass filter
  • Arpeg/Seq - 8-Track sequencer, Arpeggiator and real-time Phrase Sequencer
  • Keyboard - 61 notes (w/ velocity)
  • Control - MIDI
  • Date Produced - 1998
  • Resources & Credits
  • Images from Synthesizer Picture Gallery (site gone).

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