TL;DR: Elektron has released OS v1.55 for the Analog Four and Analog Keys, adding a Euclidean sequencer mode, global parameter control, loop pages, and arpeggiator rotation. The update breathes new life into these 4-voice analog synths, proving Elektron still cares about their older hardware.
- Euclidean sequencer mode adds generative rhythm patterns to the Analog Four and Keys.
- Control All lets you tweak all four voices simultaneously for massive sound changes.
- Loop Pages and Rotate Arp Sequence expand creative sequencing possibilities.
- Save Trig to Sound allows per-step sound parameter recall for detailed performance.
- Compatible with MKII, MKI, and Analog Keys — no hardware upgrade needed.
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What is the Analog Four OS 1.55?
Elektron, the Swedish mad scientists of grooveboxes, have dropped a surprise update for their venerable Analog Four and Analog Keys. Version 1.55 isn’t a major overhaul — it’s more like finding a forgotten bag of Swedish fish in your studio cabinet: unexpected, sweet, and oddly satisfying.
The update brings Euclidean sequencing, Control All, Loop Pages, Rotate Arp Sequence, and Save Trig to Sound. For those who’ve been sleeping on the Analog Four, this is a solid reason to wake up. The MKI models from 2012 are included, which means your dusty old synth just got a new lease on life. I’ve seen fewer comebacks in rock reunions.
At Noxal, we appreciate when companies support their older hardware. It’s like a band releasing a b-side album years later — it shows they still care about the fans who bought the first pressings. And Elektron has a history of doing this, unlike some manufacturers who’d rather you buy the new $2000 box.
The Euclidean Revolution
The headline feature is Euclidean sequencer mode. For the uninitiated, Euclidean rhythms are based on mathematical patterns that distribute beats evenly across a number of steps. Think of it as algorithmic drum patterns, but applied to your bassline or lead. It’s the kind of thing that makes you sound smarter than you actually are at a party.
This mode lets you generate complex, polyrhythmic sequences without manually programming every step. You set the number of steps and hits, and the sequencer does the rest. It’s perfect for techno, ambient, or any genre where you want your synth to sound like it’s thinking for itself. And let’s be honest, sometimes our own ideas need a little algorithmic boost.
For the Analog Four’s four analog voices, this means you can create evolving, generative patterns that feel alive. Combine it with the synth’s built-in effects and filter, and you’ve got a setup that could keep you busy for weeks. Or at least until your coffee runs out.
Control All and Other Magic
Control All is exactly what it sounds like — you can tweak parameters across all four voices simultaneously. This is a game-changer for live performance. Instead of adjusting each voice individually, you can grab one knob and send the whole mix into orbit. It’s like having a master volume for chaos.
Loop Pages let you repeat specific patterns within a sequence, which is great for building tension or creating stutter effects. Rotate Arp Sequence shifts the arpeggiator pattern, so you can cycle through different note orders without reprogramming. Save Trig to Sound is a subtle but powerful feature: it saves the sound parameters to a specific trigger step, so you can recall exact timbres at precise moments in your sequence.
These features might sound niche, but they’re the kind of tools that separate a good performance from a great one. We at Noxal have spent many late nights tweaking sequences, and anything that reduces menu diving is a win. Plus, the update is free — which is rare in a world where some companies charge for firmware patches.
Who Is This For?
This update is for anyone who owns an Analog Four or Analog Keys and wants to squeeze more juice out of their hardware. It’s for the producer who loves analog warmth but craves modern sequencing tricks. It’s for the live performer who needs quick access to global controls without breaking flow.
If you’re new to Elektron gear, this update makes the Analog Four an even more compelling entry point. The Euclidean mode alone justifies the cost if you’re into generative music. And for those on the fence about buying used — well, now’s a good time to grab an MKI on the cheap and get all the latest features.
Personally, I’ve got an Analog Four MKI sitting next to my coffee station. It’s become my go-to for late-night jam sessions when I want something tactile and immediate. The OS 1.55 update has made it feel like a new synth — without the credit card bill. That’s rare in this hobby.
Frequently Asked Questions
Is the OS 1.55 update free?
Yes, it’s a free firmware update available from Elektron’s website. No subscriptions or hidden fees — just download and install via the Elektron Transfer app.
Does it work with Analog Four MKI and Analog Keys?
Absolutely. The update supports both MKII and MKI versions of the Analog Four, as well as the Analog Keys. No hardware revision required.
What’s the most useful new feature for live performance?
Control All is the standout for live use. It lets you adjust parameters across all four voices at once, making real-time sound sculpting much faster. Euclidean mode is also great for generating rhythmic variation on the fly.
Now if you’ll excuse me, I need to update my Analog Four and make sure my espresso machine is calibrated — both require precise timing and a little bit of love.