When it comes to iOS music production, Koala Sampler (developed by Elf Audio / Marek Bereza and distributed via Mazbox Limited) is a certified phenomenon. Universally adored as the software equivalent of the legendary Roland SP-404 hardware, Koala built its massive reputation on speed, simplicity, and an addictive, friction-free workflow.
But with its latest milestone update, Elf Audio has completely rewritten the rulebook. Koala Sampler is no longer just a standalone sampler plugin—it is now an AUv3 host.
This massive update allows you to load third-party Audio Unit instruments and effects plugins directly inside Koala’s ecosystem. Whether you want to sequence an external synthesizer and sample it directly on a pad, or sculpt your drums using high-end studio processors, Koala has evolved into a self-contained mobile workstation.
The Catch: You Need the Mixer In-App Purchase
Before diving into the sonic possibilities, there is one critical detail you need to know. The new AUv3 hosting capability is entirely integrated into the app’s advanced mixing environment.
Important Note: To unlock AUv3 hosting inside Koala Sampler, you must own or purchase the Mixer Add-on, which is available as a one-time $4.99 In-App Purchase (IAP).
If you already own the Mixer IAP, this massive feature upgrade lands in your lap completely free of charge. For those who haven’t upgraded yet, this addition turns a handy mixing tool into an absolute necessity.
How AUv3 Hosting Expands Koala’s Sonic Universe
Previously, if you wanted to process Koala through third-party effects like FabFilter, Eventide, or Baby Audio, you had to host Koala inside a larger DAW or utility app like AUM, Loopy Pro, or Logic Pro for iPad.
Now, you can keep your workflow incredibly streamlined by keeping everything inside Koala.
1. AUv3 Effects as Signal Shapers
By opening the sample or mixer page, you can open a dropdown menu on any individual channel and load your favorite AUv3 effects. You are no longer limited to Koala’s native (albeit wonderful) lo-fi and performance effects. You can now insert precision surgical EQs, lush shimmer reverbs, analog tape saturators, or complex modulation delays directly onto specific sample pads or mix buses.
2. AUv3 Instruments as Sound Sources
The update also lets you load AUv3 instruments directly into the interface. Want to lay down a sub-bass line using a Moog model emulation or add an evolving digital pad underneath your chopped drum breaks? You can host the synth inside Koala, play it via Koala’s internal keys or piano roll, and bounce or resample that audio directly onto an empty pad in real-time.
What is Koala Sampler? A Quick Refresher
For the uninitiated, Koala Sampler is the ultimate pocket-sized beat machine. It eliminates the “analysis paralysis” common in large DAWs by throwing you directly into the creative flow state.
- Instant Sampling: Tap an empty pad to record audio immediately through your device’s microphone, an audio interface, or via screen-recording import.
- Effortless Chapping: Slice up breaks automatically or manually with a tactile, visual waveform editor.
- High-Resolution Sequencer: Drag and drop patterns, play melodies chromatically using built-in scales, and build full tracks with live quantization and swing.
- AI Stem Splitting: Extract vocals, drums, bass, and melodies from any imported audio track with a single tap.
- Resampling Engine: The hallmark of the app—you can record the entire master output of the app back into a single pad, stacked with effects, indefinitely.
Technical Specifications & Features
Koala Sampler remains one of the most lightweight, highly optimized audio apps on any platform, making the addition of an internal AUv3 host even more impressive.
| Feature | Details |
| App Pricing | $4.99 base app |
| Required IAP for AUv3 Host | Mixer Add-On ($4.99) |
| Plugin Architecture | Can act as an AUv3 Instrument and host third-party AUv3s |
| Connectivity | Ableton Link, MIDI Learn, AudioShare, Files App integration |
| Export Formats | WAV, AAC, or direct export as an Ableton Live Set |
| Platform Compatibility | iPhone, iPad, Apple Vision, and Apple Silicon Macs |
Whether you are sketching out a lo-fi hip-hop beat on an iPhone during your commute or building a complex electronic live set on an iPad Pro, this update firmly establishes Koala Sampler as a premier creative ecosystem.
App price: $4.99.
In-app purchases: Solar Studies pack at $2.99; Samurai Edition – $3.99; Mixer – $4.99; Cirrus Cuts Sample Pack – $2.99; Analog Astronaut Sample Pack – $2.99; Soon Come Dub Sample Pack – $2.99.
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