What does OS 1.55 add?
Elektron pushed OS 1.55 to the Analog Four MKI, the MKII and the Analog Keys on June 10, and it is free for everyone who already owns one. The headline is a proper Euclidean sequencer mode: two generators that algorithmically scatter trig pulses across a sequence, with control to add, subtract and shift where the hits land. That is how you get those breathing, off-grid hi-hat and percussion lines without hand-drawing every step.
The rest reads like a wishlist finally answered. 'Control All', long a favourite on the Digitakt and Digitone, arrives here too: hold a track and twist a single knob to move that parameter across every track at once. Page loops let you jump to a specific sequencer page and loop it on the spot. The arpeggiator gains a rotate function for reshuffling a line into new shapes, and there is a 'save trig to sound' option, plus the usual bug fixes.
Why does a sequencer update matter for house and techno?
The Analog Four is a workhorse in minimal, dub-techno and live house rigs, four voices of real analog with a sequencer people build whole sets around. Euclidean sequencing is the fastest route to evolving polyrhythmic percussion, the kind of pattern that never quite repeats. And 'Control All' is the exact performance gesture this music lives on: sweep a filter, stretch a decay or detune across all four tracks in one move while the floor holds its breath.
Free firmware on a 14-year-old synth is the quiet flex Elektron keeps making.
Is it really free, and for which machines?
Yes, free, for the Analog Four MKI, the Analog Four MKII and the Analog Keys, installed through Elektron's Transfer app. The MKI design dates to 2012, which is the part worth sitting with: in a market built on annual upgrades, a company shipping deep new features to a 14-year-old box for nothing is doing the opposite of planned obsolescence. It also quietly protects the resale value and working life of a machine plenty of underground producers actually own.
