Elastic OSC just got a serious upgrade, and Nu-Trix The Synth Guy is here to break it down with his trademark blend of geekery and groove. We’re talking six-operator FM engines straight out of the DX7’s playbook, SysEx import for your vintage patch hoarding, and a modulation section that’s basically a rave in an iPad. If you like your synths flexible, unpredictable, and just a bit mad, this one’s for you. Don’t let the app store icon fool you—this thing’s a proper sonic street weapon.

12. December 2025
SPARKY
Nu-Trix The Synth Guy Unleashes Elastic OSC’s DX7 Mayhem
DX7 DNA: Six-Op FM with SysEx Swagger
Nu-Trix The Synth Guy dives headfirst into Elastic OSC’s new FM territory, and it’s not messing about. The app now packs three six-operator FM engines, each channeling the spirit of the classic DX7—think metallic clangs, glassy pads, and all the digital dirt you can handle. The best bit? You can now import DX7 SysEx banks directly, so your ancient patch collection finally gets a second life on your iPad.
The workflow is slick: load up your favourite SysEx bank, or get weird with the built-in random bank generator (more on that soon). Editing is quick but deep, letting you morph, envelope, and modulate your way through a forest of FM chaos. Nu-Trix points out that Elastic OSC manages to be both complex and simple, which is a rare trick—especially when you’re wrangling six operators. If you’re after that classic FM bite with a modern twist, this app’s got teeth.

"They're really based on the six operator FM synthesis of the DX7, up to a point that actually can now load system exclusive banks of the DX7, which is pretty cool."
© Screenshot/Quote: Nu Trix (YouTube)
Quad LFOs: Modulation Mayhem

"The new stuff is this: the four LFOs being able to be controlled and combined before sending to your destination, which is something we don't see usually."
© Screenshot/Quote: Nu Trix (YouTube)
Forget your standard single LFO—Elastic OSC now throws four into the mix, and it’s a modulation free-for-all. Nu-Trix shows how each LFO can be shaped, sped up, and routed to different destinations, with a visual feedback system that actually makes sense (for once). The retrig, one-shot, and free-running modes mean you can dial in everything from snappy envelopes to wobbly, evolving textures.
The real kicker is the LFO mix view. Here, you can blend the influence of each LFO on a parameter, using a colour-coded system that’s more rave bunker than spreadsheet. It’s not always obvious where your modulation is going, but that’s half the fun—move the corners, watch the colours shift, and let chaos reign. If you like your sound design unpredictable, this is your playground.
DX7 Bank Generator: Cartridge Chaos
Elastic OSC doesn’t just let you import DX7 banks—it lets you create them from scratch with a built-in generator. Nu-Trix walks us through the process: open the online window, hit generate, and boom—a fresh cartridge of random FM madness, ready to load. Sometimes you get gold, sometimes you get noise, but that’s the joy of FM roulette. It’s a fast way to stumble on unexpected sounds and keep your patches fresh.
Polyphonic Filter: Every Note Gets a Slice
Just when you thought it couldn’t get any deeper, Elastic OSC adds a polyphonic filter to the arsenal. Each note gets its own filter movement, so your chords and stacks can swirl and morph independently. Depending on the engine, you can push up to eight voices of polyphony—meaning eight separate filter journeys happening at once.
Nu-Trix highlights how this opens up new territory for expressive playing and evolving textures. It’s the kind of feature that turns a decent synth into a performance monster. If you want your pads to breathe and your leads to wiggle, this filter’s got your back. But honestly, you need to hear it in action—words don’t do the movement justice.

"The filter now is polyphonic meaning that every note have their own filter movement separate from each other."
© Screenshot/Quote: Nu Trix (YouTube)
Why This Update Slaps: Real-World Sound Potential
Nu-Trix wraps things up by showing how these features come together in real music-making. The DX7 import, quad LFOs, and poly filter aren’t just for show—they’re tools for serious (and seriously fun) sound design. If you want to see Elastic OSC get pushed to its limits, you’ll need to watch the video and catch those wild patch demos yourself. This isn’t just another iPad synth—it’s a portable chaos machine, and it’s begging for a spot in your next jam.
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