XLN Audio XO 1.8.10-2026.09.04-Complete — Mac version

If you've ever used a spectrum analyser to spot frequencies, XO does a similar trick for drum sounds. It maps every kick, snare and hi-hat from your collection onto a visual cloud, grouping similar hits together so your ears can follow your eyes. It ships with a solid 8,700+ one-shot samples and over 240 editable presets, so you can start sculpting a beat the moment you open it.

Hot-swapping kit sounds on the map

The Hot Swap feature is where the mix gets shaped fast. Click any sound in the kit and scroll through neighbouring dots on the map — each one a different sample with a similar character. You hear the change instantly within the full beat, which makes it easy to tighten up a flabby kick or find a snare that cuts through without clashing. The Groove Templates then let you nudge the whole rhythm away from a stiff grid, pulling the feel looser or driving it harder before you even touch a fader.

Playground for accidents

Playground mode hands the controls over to chance. It pulls random samples from the map into your kit, creating combinations you wouldn't have dialled in yourself. You can lock the parts you like and keep hitting the dice on everything else. It's a quick way to break out of your go-to sample folder and land on something raw that sits differently in the stereo field, often sparking a new direction for the whole track.

First days: get your own library mapped

XO scans the factory content straight away, but the real power kicks in when you point it at your own drum folders. Drag a few sample packs onto the interface and let it chew through them overnight. The similarity map becomes yours — not a generic cloud of sounds someone else picked, but a map of the kicks and snares you actually reach for.

One thing worth doing early: tidy your sample folders before the scan. XO reads what's there, so a folder full of mislabelled 808s and half-finished bounce files will clutter the map. Spend ten minutes binning the duds. The plugin remembers your folders between sessions, so you only do the heavy lifting once.

If the start-up drags after a scan, the 1.8.10 update sorted a rare slow-launch bug. On older Macs, closing other memory-hungry plugins while XO builds its database helps it zip along.

From a blank DAW session to a finished beat

Here's a workflow that gets a groove down in under fifteen minutes, with minimal staring at an empty arrange window.

Step one: load a preset that's close to the tempo and energy you want. The 240 factory presets span everything from dusty lo-fi kicks to tight modern trap — pick one, hit play in your DAW, and listen to the full pattern with the sequencer running.

Step two: swap the sounds that don't sit right. Click the kick pad, then wander around the nearby dots in the Space. Each click drops a new sample into the beat while it plays. Stay in the same neighbourhood for subtle shifts, or drag further out for a completely different flavour. Lock the keeper with a right-click.

Step three: tweak the feel with Groove Templates. A quantised beat can sound surgical in a bad way. Scroll through the templates — some push the snare a touch late, others tighten the hi-hat shuffle — until the rhythm breathes the way you want.

Step four: export the MIDI to your DAW. Drag the pattern out of XO and onto a MIDI track. Now you can chop notes, change velocities, or layer the exported MIDI with another drum instrument. The update fixed a bug with muted lanes during MIDI export, so silent parts stay silent.

Browser meets sequencer, not a drum synth

Does it replace my drum machine plugins? Not quite — it's a browser and sequencer rolled together. You'll still reach for your favourite compressor or transient shaper on individual channels. Think of XO as the front end: finding sounds and building patterns fast, then handing the audio or MIDI off to your usual mixing chain.

Will it choke on a huge sample library? The map can handle tens of thousands of one-shots. The initial scan takes time — go make a brew — but once the database is built, browsing is snappy. The visual cloud stays responsive even when you zoom around a dense cluster of snares.

Can I run it as a standalone instrument? Yes, standalone mode works outside a DAW. It's handy for sound design sessions where you just want to audition samples and sketch ideas without loading a full project. Some producers use it standalone with headphones late at night, then drag the saved kit into a session the next morning.

Does it only do electronic drums? The factory library leans electronic, but the similarity engine doesn't care about genre. Point it at a folder of acoustic drum recordings and it maps them just as well — rim shots cluster together, brush hits find each other. What you feed in shapes what comes out.

• macOS 10.13 or newer
• Apple Silicon and Intel Macs