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Gateron Lunar Probe vs. Kailh Plum

An in-depth look at the Gateron Lunar Probe and the Kailh Plum switches—which one is the best fit for you?

Overview

When it comes to choosing between the Gateron Lunar Probe, a linear switch, and the Kailh Plum, a tactile switch, both switches offer unique features that cater to different preferences. The Lunar Probe is praised for its stable and consistent keypresses, thanks to Gateron's dual rail mechanism, while also providing an incredibly smooth and pre-lubed linear sensation with a subtle sound signature. On the other hand, the Plum offers a hefty feel with a unique tactile experience that doesn't have a significant tactile bump, setting it apart from other tactile switches. The sound profile of the Plum is described as neutral and enjoyable. If you're looking for a linear switch with a smooth keypress experience, the Lunar Probe may be the way to go. However, if you prefer a tactile switch with a unique feel and sound profile, the Plum could be the ideal choice. However, let's dive in a bit deeper beyond generalities so you can best decide on the best switch for you.

By the numbers

Technical specifications

Actuation force

45g

Actuation force

N/A

Bottom-out force

50g

Bottom-out force

70g

Pre-travel

1.80 mm

Pre-travel

1.70 mm

Total travel

3.60 mm

Total travel

3.60 mm

Factory lubed

Yes

Factory lubed

No

Stem construction

Standard

Stem construction

Standard

Stem material

POM

Stem material

POM

Top housing material

Polycarbonate

Top housing material

Polycarbonate

Bottom housing material

Nylon

Bottom housing material

Nylon

Mount type

PCB (5-pin)

Mount type

Plate (3-pin)

Spring

Double-staged spring

Spring

Stainless steel

Housing materials

The Gateron Lunar Probe and Kailh Plum both feature polycarbonate top housing, resulting in a sharper, higher-pitched, and crisper sound profile. This is due to polycarbonate being a stiffer plastic, enhancing clarity and resonance in the sound produced. Additionally, the translucency of polycarbonate makes it ideal for switches with RGB lighting, adding an aesthetic appeal to the overall design. With both switches utilizing polycarbonate for their top housing, users can expect similar results in terms of sound profile and visual appeal.

However, when it comes to the bottom housing material, the Gateron Lunar Probe features nylon while the Kailh Plum also utilizes nylon. Nylon is known for creating a deeper and fuller sound profile due to its softer nature, absorbing more sound than harder plastics. This leads to a duller and rounder sound experience when typing on switches made with nylon bottom housing. Despite both switches using the same material for their bottom housing, the impact of the bottom housing on the overall sound and feel may vary slightly between the Gateron Lunar Probe and Kailh Plum.

Considering the split between top and bottom housing materials in switches, the qualities brought by each material are divided accordingly. The bottom housing has more influence on the bottom-out sound and feel when a key is pressed, while the top housing affects the sound when the key is released. This means that the Gateron Lunar Probe and Kailh Plum may offer slightly different typing experiences based on the materials used in their top and bottom housings, even if they share similarities in certain aspects such as using polycarbonate for the top housing.

Weight

The actuation force and bottom out force of the Gateron Lunar Probe linear switch and the Kailh Plum tactile switch differ significantly. The Lunar Probe has a light actuation force of 45 grams and a bottom out force of 50 grams, making it ideal for those who prefer a lighter typing experience. In comparison, the Plum tactile switch has a medium-heavy bottom out force of 70 grams, with the actuation force being unknown. This difference in weight offers distinct typing experiences to users. Some may find the lighter Lunar Probe switch more suitable for extended typing or gaming sessions, while others may prefer the heavier Plum switch for a more substantial and tactile typing feel. Ultimately, the choice between the two switches depends on personal preference and the typing experience one desires.

Travel distance

The Gateron Lunar Probe linear switch and the Kailh Plum tactile switch have identical travel distances of 3.6 mm. This means that both switches will provide a similar tactile feedback and typing experience in terms of key travel. Whether you choose the Lunar Probe or the Plum, you can expect the same distance traveled when pressing down on a key. Despite their differences in terms of linear and tactile feedback, the travel distance remains consistent between the two switches.

Price comparison

Which switch is more bang for your buck?

The Gateron Lunar Probe has an MSRP of $6.50 per 10 switches. At Milktooth, we are able to pass on savings to our customers and offer the Lunar Probe for $4.19.

The Kailh Plum comes in at $6.25 per 10 switches.

Here at Milktooth, we offer the best prices on switches (on average, 27% lower the competition). In addition, we offer free shipping on orders over $49.00. We also offer free returns and exchanges, so you can shop with guaranteed satisfaction.

That said, while price is an important piece of the puzzle, our opinion is that you should ultimately pick the option that most suits your unique preferences since you’ll be using these switches for years to come. In other words, finding something perfect for you is, in our view, the most important criteria.

Typing experience

When it comes to sound, the Gateron Lunar Probe linear switch offers a subtle sound signature, providing a quiet typing experience that is suitable for shared spaces or environments where noise may be a concern. On the other hand, the Kailh Plum tactile switch is described as having a neutral sound profile, offering a moderate level of sound that is enjoyable and versatile for various settings. Both switches provide a pleasant auditory experience, with the Lunar Probe offering a quieter option while the Plum provides a more neutral and balanced sound.

In terms of feel, the Gateron Lunar Probe linear switch is known for its incredibly smooth and pre-lubed linear sensation, offering a consistent and stable typing experience that is gentle on the fingers. In contrast, the Kailh Plum tactile switch is described as feeling hefty with a unique tactile bump that is not overly pronounced. This provides a tactile typing experience that is different from traditional tactile switches, offering a middle-ground approach that is approachable to most users. Both switches provide a comfortable typing experience, with the Lunar Probe offering a smooth linear feel and the Plum offering a unique tactile sensation.

Overall, the Gateron Lunar Probe linear switch and the Kailh Plum tactile switch offer different yet appealing qualities in terms of sound and feel. The Lunar Probe excels in providing a quiet and smooth linear typing experience, while the Plum stands out for its unique tactile sensation and neutral sound profile. Depending on individual preferences for sound and typing feel, both switches offer excellent options for mechanical keyboard enthusiasts looking for a high-quality typing experience. Ultimately, choosing between the two switches will come down to personal preference in terms of sound and typing feel.

Conclusion

In summary, when deciding between the Gateron Lunar Probe linear switch and the Kailh Plum tactile switch, consider the factors of bottom out force, sound, and feel. If you prefer a lighter switch with a stable and consistent linear feel, opt for the Lunar Probe. On the other hand, if you prefer a medium-heavy switch with a unique weightiness and subtle tactile bump, the Plum might be more to your liking. Keep in mind that the Lunar Probe provides a smooth and pre-lubed linear sensation, while the Plum offers a neutral sound profile and a mild yet stepped tactile feel. Ultimately, your decision should be based on your personal preferences and typing style.

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