AudioKit Pro SUPER J8 Brings Jupiter-8 Engine to iOS with AUv3

AudioKit Pro released SUPER J8 in mid-February 2026 as a standalone and AUv3 plugin for iPhone and iPad, offering a Jupiter‑8‑inspired engine with an introductory App Store price of $7.99/£7.99 until February 28, after which the app rises to $29.99/£29.99. AudioKit core-team member Matthew Fecher wrote about the launch on February 12 and positioned the app for mobile DAW use, explicitly calling out GarageBand for iPad compatibility.

The app is built around a newly developed DSP engine that AudioKit and reviewers describe as 100% real-time synthesis with 2x oversampling, not a sample-based instrument. Matthew Fecher said, “We took a real vintage Jupiter-8 (yes, the $30,000 one) and spent hours recording it, then used machine learning to recreate all those gorgeous analog imperfections that make it sound alive. This isn’t generative AI stuff. We analyzed a mountain of data from the actual hardware to nail those tiny variations that give analog synths their warmth and character.”

SUPER J8 delivers up to 64 voices of polyphony and true poly unison, implemented as the ability to play 8 notes with 8-voice unison for a full 64-voice stack. The voice architecture includes unison start sync, oscillator sync described as “raw, gritty,” J8-style cross-modulation, a PWM engine modeled on vintage hardware behavior, a frequency tracker, and per-voice analog panning, features listed across the product materials and technical write-ups.

Modulation and performance tools are extensive: three LFOs, more than 60 modulation destinations, LFOs that can modulate other LFOs, dual assignable touch pads for realtime FX control, a classic arpeggiator and a vintage-style step sequencer. Effects include a reverb “based on Sean Costello’s Valhalla code,” analogue-style tape delay, chorus and bit-crushing. Sonicstate quoted an AudioKit spokesperson summarizing the approach: “Powered by ethical machine learning and advanced DSP, SUPER J8 delivers lush pads, deep basses, classic keys, and vibrant leads that feel truly alive. The oscillators are trained by recording hours of a real $30,000 vintage Jupiter-8. The mountains of data gathered by analyzing that synth is used to power the the oscillators in the app, creating analog-like variations in the tuning and other attributes that make the app feel ALIVE! It's not generative AI, it's pure synth power!”

The package ships with more than 600 presets from designers including Analog Matthew, Electronisounds, DMT Cymatics, Moby Pixel, Red Sky Lullaby and The Sound Test Room, with AudioKit Pro planning additional preset banks as free updates. Pricing and availability are consistent across reporting outlets: App Store distribution for iPhone and iPad, standalone operation plus AUv3, $7.99/£7.99 intro until February 28 and $29.99/£29.99 regular.

AudioKit’s blog carries a legal disclaimer about third party trademarks and endorsements: “This app has no affiliation or endorsement by Roland. This app is not an official clone of any their synths. While we were inspired by their wonderful and iconic work, SUPER J8 is not affiliated with or endorsed by Roland Corporation. ‘Jupiter-8’ and any other referenced trademarks are the property of their respective owners and are used for identification and reference only. It is an original creation inspired by classic synthesizers, created to celebrate music creation and education.”

Reviewers such as Synthanatomy flagged that Super J8 differs from prior AudioKit Pro titles by relying solely on DSP code rather than sample-based oscillators and noted they could not independently verify exact parity with a hardware Jupiter‑8. For now, the concrete claims to watch are the DSP-only architecture, the ML-trained oscillators from hours of Jupiter‑8 recordings, the 64-voice ceiling, the 600+ preset bank and the App Store promo window that closes February 28, grab it on the App Store to test AUv3 in GarageBand for iPad before the introductory price ends.