New iOS App, Super J8, Sounds Like A $30,000 Synthesizer

Developer Matthew Fecher (AudioKit Pro) shared this introduction to Super J8, a new iOS software synth that’s designed to sound like a $30,000 Roland Jupiter-8.

Fecher says that Super J8 was developed in part with the use of ‘ethical AI machine learning’. The oscillators were trained by recording hours of output from a vintage Jupiter-8. The mountains of data gathered by analyzing the hardware synth ‘powers’ the the oscillators in the app, creating analog-like variations in the tuning and other attributes that he says make the synth feel ‘alive’.

Other highlights include Oscillator Sync, Cross-Modulation, 2x Oversampling, True Per-Voice Poly Unison, PWM, Analog Voice Modeling, Analog Panning, Envelope Polarity, and Single-Note Polyphony.

Topics covered in the video include:

0:00 Intro, New Features!
1:32 2x Oversampling
1:56 True Per-Voice Unison, 64 Voices!
3:40 Single Note Polyphony
4:07 Analog Saturation
4:49 Oscillator Sync
5:48 PWM
7:16 Mixer Panel
7:31 Cross Mod (X-Mod)
9:31 Per-Voice Panning
10:19 Main Panel
13:38 Bonus LFOs
14:14 Envelope Panel (ADSR)
16:00 FX Panel
16:23 Easter Egg?!
17:16 WiP Presets Demo
19:23 Exclusive Presets (500+ Included!)

Features:

  • New sound engine with advanced DSP
  • 650+ presets included (more to come)
  • True Poly Unison with unison start sync
  • 64 voices – like a Jupiter-64! Play 8 notes with 8-voice unison.
  • Raw, gritty Oscillator Sync
  • J8-style cross-modulation plus frequency tracker
  • Per-Voice Analog Panning
  • Single Note Polyphony for notes & unison stacks
  • 2x oversampling for more analog-style lows and highs
  • PWM engine modeled after vintage hardware behavior
  • FX: Reverb based on Sean Costello’s code (Valhalla plugins Plug-ins), Analog Tape Delay, Chorus, Crush, and more.
  • 3 LFOs, over 60+ possible destinations. LFOs can even modify other LFOs.
  • Dual Assignable Touch Pads, manipulate FX in real time
  • Classic Arpeggiator & Vintage Style Step Sequencer
  • ENV-1 Polarity & Dual Envelope ADSRs like original hardware
  • Control it with a MIDI Keyboard, MIDI Learn to map your controls to the app
  • Works as a Plug-in Instrument in GarageBand, Logic for iPad, AUM, etc

Pricing and Availability:

Super J8 is expected to be available Feb 12, with an intro price of $7.99 USD (normally $29.99).

24 thoughts on “New iOS App, Super J8, Sounds Like A $30,000 Synthesizer

  1. i am impressed , every time Fecher brings us a new synth it’s a must have.
    This one is a gem , i ordered it immediately , love to hear it in my studio space the 12th
    Thanks 4 all the hard work Mr Fecher

  2. i am going to cross-modulate the hell out of thing!

    such a great product from a visionary developer. so many little details and smart- and musical improvements on the original design.

    Good vst makers that just do lazy money-grab ports of their products take notice: this is how iOS interface should be.

    IOS developers that make 10 new apps per year but all of them kind of unfinished and forever stuck on version 1.0 too.

    or the ones that make fancy interfaces around yet another IR or two and call it a product too.

    okay i’l find the door now 😉 …

    1. Lazy money-grabs? This guy’s apps are all pretty much the same, romplers (sampled oscilliators) with low quality filter/FX applied on top. Same UI every time, no real personality, sounds are meh. More of a rompler than a synth. And he pumps them out multiple times a year and lies about sales that end soon. Now he’s even using AI, no surprises there though.

      1. it ‘s not a rompler. i think the UI is great and i ‘m fine that they are uniform. the effects are based on valhalla dsp in this one, bad ??
        ‘Now he s even using AI’, yes he used ethical AI, just like for example Sonic Charge uses AI to create pioneering products.
        you think ‘all AI is baad’ mkay? this synth app has oversampling and sounds not meh. the juno emulation is free and been developed for schools in economic weak parts of the world to use for teaching.

    2. Nah, criticize away. I have products from the companies you mentioned and I agree. I curiously but naively buy plenty iOS vsts to test out and too many seem to be just slapped together code with a few tweaks under a nice UI. By now everyone should know which VSTs are the GOATS on iOS and elsewhere and should save their money and invest the time to learn those GOATS in and out.

  3. $30k synthesizer? Puh-lease. Outdated model from the 1980’s that Behringer is in the process of cloning? Perhaps. But there are plenty other software versions of the Roland Jupiter-8, and Yamaha CS-80 which is probably even more admired.

    1. yeah sure, that jupiter 8 is just an old piece of crap that where 3000 units made of that no one cares about and b-brand are going to highly Improve it with like the original unison per voice and all the tricks the original has and then the many extra-s this app has. for penny’s!
      this app is a fraud ripp of right ;D surely something to be negative about

      Btw word on the street is the developer is working on cs80 app too, and another big one. you can freely try the j6 app for now, which is a way better app then most payed apps.
      o wait, you don’t don’t use ipad in the studio. environment. it’s for amateurs right 😀

    2. “But there are plenty other software versions of the Roland Jupiter-8”
      You must know something we don’t. There aren’t any Jupiter synths for the iPad or iPhone. I am happy this new app is here!

  4. If I buy this synth for my old iPad, will I also be able to use it on my new Mac as well or will I have to buy another licence for that?

  5. With the AudioKit synths, I can’t figure out how to assign non-CC control sources like velocity, release-velocity, or pitch to any parameters/targets. Any advice?

  6. How many flagship reimaginings do we need? I guess the answer is “More.” It depends on where the line is for you, between really digging into the sound of your favorite take versus mere bragging rights. I’ve played a lot of the classics. Don’t sweat it too much; the VAs are really close to the OG hardware. Another plus: VAs don’t go out of tune when you breathe on them or have some drunk arsehole spill a drink into them onstage. They don’t run $30K, either.

    1. How many do we need? Well, this is the first Jupiter for iPad and iPhone. So, I guess the answer is “at least one” and this fits the bill. I dig it!

  7. I do not need another J8 after the Cherry Audio Mercury 8 came out. It is fantastic and sounds amazing and it is for my MacBook which I run through a high quality audio interface. I rarely use my iPad for iOS plug-in synths anyway any more.

  8. Now, take all that research and development, and work on a Jupiter 4 version. I’ll buy that too!
    The CS80 one is a given as well.

  9. Wow. I used to work for Roland during the time when the J-8 came out. Then I went to work for Con Brio, one of the first all-digital synthesizers, the other three being the Fairlight, the Synclavier and the Crumar.
    All of these digital instruments sold for about $25,000 and you needed a truck to move them around. Now, here we have J-8s, vastly inferior to any of the digital synthesizers of the 80s selling for $30,000?!?!?

    I guess this iOS app is a good idea, at least in economic terms.

  10. I “pre-bought” or “reserved” the app… It’s so bizarre to reserve something that is infinite… even more so that if this app ends up beign a bug ridden dud I already gave them my money with no easy way to get it back… What a weird thing…

    That said I enjoy this dev products and I think I have all their releases.

  11. Ever read The Time Machine? In the far future the Morlocks are the descendants of the working class who keep the machines running but aren’t allowed to partake of the finer things in life. The Eloi are the remnants of the capitalist class who live in the sunshine and enjoy the fruits of the Morlocks’ labor. The trick that the Morlocks developed is finding that gamine Eloi are easy to catch and tasty to eat. I suspect the novel might be the inspiration for the phrase Eat the Rich. What is happening with “AI” now, in how it is being given all the work by users who have no understanding of how it results, will lead us to that amusing future predicted by H. G. Wells. In a few months or years, nothing new will ever be invented again. It will only be successive repetition of everything that already exists, delivered to a world that has no idea how to take another step forward. Progress ends here.

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