HMX EVA vs. KTT Purple Star
An in-depth look at the HMX EVA and the KTT Purple Star switches—which one is the best fit for you?
Overview
When it comes to choosing the perfect mechanical keyboard switch, the HMX EVA and the KTT Purple Star both offer unique features that cater to different typing preferences despite being categorized as linear switches. The HMX EVA, inspired by the iconic aesthetics of Evangelion Unit-01, is celebrated for its resonant sound signature and silky smooth feel, making it a compelling choice for enthusiasts who appreciate a tactile feedback and a bit of auditory enjoyment while typing. On the other hand, the KTT Purple Star impresses with its all-POM construction, providing an exceptionally buttery typing experience complemented by a neutral sound profile. With a very light 45g bottom-out, these switches cater to lighter typists who prefer an effortless and comfortable typing experience. While both switches offer distinct advantages, the choice ultimately depends on your personal preferences for sound and feel. 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
42g
Actuation force
43g
Bottom-out force
48g
Bottom-out force
50g
Pre-travel
2.00 mm
Pre-travel
1.80 mm
Total travel
3.60 mm
Total travel
3.50 mm
Factory lubed
Yes
Factory lubed
Yes
Stem construction
Standard
Stem construction
Partial box
Stem material
T2
Stem material
POM
Top housing material
Nylon
Top housing material
POM
Bottom housing material
Nylon
Bottom housing material
POM
Mount type
PCB (5-pin)
Mount type
PCB (5-pin)
Spring
22mm single-stage spring
Spring
Stainless steel
Housing materials
The HMX EVA and KTT Purple Star switches both utilize housing materials that contribute to their unique sound profiles, but they differ significantly in the materials used for their upper and lower housings. The EVA features a nylon top and bottom housing, known for its classic qualities and capacity to produce a fuller, rounder sound. The softness of nylon allows it to absorb sound more effectively than harder plastics, leading to a typing experience that is both deeper and less obtrusive. This characteristic is beneficial for users seeking a quiet typing environment or those who enjoy a richer auditory feedback while typing.
In contrast, the KTT Purple Star employs POM (Polyoxymethylene) for both its top and bottom housings. POM is recognized for its durability and distinct acoustic properties, producing a pleasingly muted sound that is also deep, although different from the roundness associated with nylon. This alternative material gives the Purple Star a unique sound profile that can appeal to users who prioritize distinct auditory feedback without the harsher noise levels often associated with harder plastics. The muted sound characteristic of POM complements the overall typing experience, providing a balance of clarity and depth that intrigues many mechanical keyboard enthusiasts.
Despite the differences in housing materials, both the EVA and Purple Star share a focus on achieving a deeper sound profile. The nylon of the EVA, with its sound-absorbing qualities, and the POM of the Purple Star, with its unique sound characteristics, can achieve similar auditory outcomes at the point of actuation. The interplay between the top and bottom housings means that while their individual materials differ, the overall typing experience remains comparably rewarding. A user pressing down on an EVA switch may find satisfaction in a similarly rounded sound, much like that produced by a Purple Star, despite the contrasting materials at play. This can lead to similar user experiences, where both switches manage to deliver a nuanced sound profile tailored for different preferences in mechanical keyboards.
Weight
The HMX EVA linear switch and the KTT Purple Star linear switch both exhibit light actuation and bottom out forces, making them suitable for users who prefer a less strenuous typing experience. The EVA has an actuation force of 42 grams and a bottom out force of 48 grams, while the Purple Star features an actuation force of 43 grams and a bottom out force of 50 grams. This shows that the EVA is slightly lighter in both actuation and bottom out forces. For those who type for extended periods or engage in long gaming sessions, the lighter forces of the EVA might offer a marginally more comfortable experience. Conversely, the Purple Star, with its heavier forces, may appeal more to individuals who enjoy a stronger push feel for their typing experience. Overall, while both switches provide similar results in terms of being light, the EVA is the lighter option, making it a better choice for prolonged use.
Travel distance
When comparing the travel distances of the HMX EVA linear switch and the KTT Purple Star linear switch, the EVA switch measures 3.6 mm while the Purple Star has a slightly shorter travel distance of 3.5 mm. This makes the EVA the longer of the two switches by a mere 0.1 mm. While both travel distances are relatively short, appealing to those who favor quicker response times—especially gamers—the EVA may provide a bit more depth for users who prefer a more pronounced actuation feel. In this case, opting for the EVA switch could deliver a more engaging typing experience for those who appreciate a hearty depth, whereas the Purple Star may cater better to users looking for a snappier, more rapid response.
Price comparison
Which switch is more bang for your buck?
The HMX EVA has an MSRP of $3.50 per 10 switches. At Milktooth, we are able to pass on savings to our customers and offer the EVA for $2.99.
The KTT Purple Star comes in at $4.88 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 considering the sound profile of the HMX EVA switch, it is characterized by a resonant sound signature that adds a unique auditory experience to typing. This quality provides a distinct tonal depth, which is often appreciated by those seeking a more pronounced sound while typing. In contrast, the KTT Purple Star switches feature a low-pitched sound signature that results in a bass-heavy and mellow tone. This auditory environment creates a subtle and neutral typing experience, making it less intrusive during usage. Overall, while the EVA switch brings in a richer auditory dimension, the Purple Star achieves a more subdued, yet pleasant acoustic profile.
In terms of the tactile experience, the HMX EVA offers a silky smooth typing feel. This characteristic is designed for a seamless experience, ensuring that each key press feels fluid and uninterrupted. On the other hand, the KTT Purple Star switches provide a mild and gentle typing feel that balances ease of use with a comfortable typing experience. The light actuating force of 45g makes them particularly appealing for light typists, resulting in minimal resistance during key presses. This combination offers a sensation that is both effortless and inviting, particularly during long typing sessions. While the EVA emphasizes a luxurious typing texture, the Purple Star focuses on easy engagement and accessibility.
In summary, both the HMX EVA and KTT Purple Star linear switches offer appealing qualities for different typing preferences. The EVA switch excels with its resonant sound and smooth feel, perfect for those who enjoy a richer auditory and tactile experience. Meanwhile, the Purple Star’s low-pitched sound and mild, easy-to-press nature cater to users seeking comfort and neutrality in their typing experience. Ultimately, the choice between these two switches will come down to personal preference regarding sound and tactile responsiveness, but both can deliver satisfying results tailored to your needs.
Conclusion
To conclude, when choosing between the HMX EVA linear switch and the KTT Purple Star linear switch, consider your typing style and the overall experience you desire. If you are looking for a switch that delivers a resonant sound and a unique aesthetic inspired by the iconic Evangelion Unit-01, the EVA is an excellent choice. Its slightly lighter bottom-out force of 48 grams makes it suitable for those who appreciate a smooth yet engaging typing experience. On the other hand, if you prefer a switch that emphasizes comfort and ease during longer typing sessions, the KTT Purple Star is ideal for you. With its mildly low-pitched sound and easy-to-press design, this switch ensures that your experience is both effortless and pleasant, making it perfect for light typists or anyone who values a gentle touch with each keystroke. Ultimately, your choice should reflect your preferences in sound signature, feel, and the type of work you do on your mechanical keyboard.
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