Geon Lucifer HE
Geon Lucifer HE is an affordable Gateron KS-20-footprint Hall Effect linear: 45g bottom-out, 3.8mm travel, factory lubed. Hands-on review.
How it feels
How it sounds
Full review
Quick Summary
The Geon Lucifer HE is a Hall Effect linear aimed squarely at making analog keyboards cheaper to get into. It uses the Gateron KS-20 magnetic footprint, ships factory lubed, and lands at well under a dollar per switch, which is the whole point. If you want a smooth, light linear for a Venom HE or other KS-20 analog board and don’t want to spend boutique money, this is an easy recommendation.
Specs and Feel
This is a single-stage 45g linear with a 3.8mm total travel, a touch shorter than the MX-standard 4.0mm, which suits the rapid, repeated keypresses analog gaming setups are built for. Because it’s a Hall Effect switch, actuation isn’t a fixed point: the magnetic stem reads continuously across roughly 0.1mm to 3.7mm of travel, so you set your own actuation depth (and rapid-trigger behavior) in software. The 15.8mm spring keeps the press light and consistent from the top of the stroke to bottom-out, with no early stack or harsh ramp.
The PC top and nylon bottom housing pair with a POM stem, and the factory lube does its job, and the stroke is clean and quiet with no obvious scratch on the way down. Stem wobble is well controlled for the price, sitting comfortably in the acceptable range rather than premium-tight. Sound is muted and unremarkable in the best way: a soft bottom-out rather than a clack, which keeps a magnetic board feeling calm under fast input.
Tuning
There’s little to do here. These come lubed and feel finished out of the box, so leave them stock. The real “tuning” on a Hall Effect switch happens in software: dial in your actuation point and rapid trigger to taste rather than reaching for lube or films.
Verdict
Buy it if you’re building or refreshing a KS-20 analog board and want a competent, smooth linear without paying a premium. The Lucifer HE doesn’t try to be a flagship. It’s a value play that delivers a light, clean linear feel and lets the magnetic sensing do the interesting work. For anyone curious about Hall Effect on a budget, it’s a sensible, low-risk pick.
Frequently asked
Are Geon Lucifer HE switches compatible with my keyboard?
They use the Gateron KS-20 magnetic footprint, so they fit Hall Effect boards built for it, including the Venom HE PCB and other KS-20 analog boards. They will not work in a standard mechanical PCB, since HE switches need a magnetic sensor under each socket.
Do the Lucifer HE switches come pre-lubed?
Yes. They ship factory lubed and feel smooth out of the box, so there is no need to hand-lube them before installing.
How heavy is the Lucifer HE switch?
It is a light-to-medium linear with a 45g bottom-out force and a 3.8mm total travel, with an analog actuation range that you can tune from a hair-trigger 0.1mm down to roughly 3.7mm in compatible software.
Compare Geon Lucifer HE against another switch
Stack specs, sound profiles, and feel side by side.