HMX EVA vs. HMX FJ400
An in-depth look at the HMX EVA and the HMX FJ400 switches—which one is the best fit for you?
Overview
When it comes to selecting the perfect mechanical keyboard switch, the HMX EVA and the HMX FJ400 both stand out as exceptional linear options, yet they cater to different preferences and needs. The HMX EVA draws inspiration from the striking colors of Evangelion Unit-01, offering a unique aesthetic along with a resonant sound signature that enhances the typing experience with a silky smooth feel. On the other hand, the HMX FJ400 serves as a balanced choice within the HMX Film switch lineup, featuring a more neutral sound profile that appeals to those seeking versatility for both gaming and typing. While the EVA's vibrant design and auditory feedback may attract enthusiasts who appreciate personality in their setup, the FJ400's balanced approach makes it a reliable option for users who prioritize adaptability. 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
50g
Bottom-out force
48g
Bottom-out force
58g
Pre-travel
2.00 mm
Pre-travel
2.00 mm
Total travel
3.60 mm
Total travel
3.80 mm
Factory lubed
Yes
Factory lubed
Yes
Stem construction
Standard
Stem construction
Standard
Stem material
T2
Stem material
T2
Top housing material
Nylon
Top housing material
POM
Bottom housing material
Nylon
Bottom housing material
Nylon
Mount type
PCB (5-pin)
Mount type
PCB (5-pin)
Spring
22mm single-stage spring
Spring
22mm single-stage spring
Housing materials
When comparing the housing materials of the HMX EVA and the HMX FJ400, a distinct contrast emerges between their top housings. The EVA's top housing is constructed from nylon, a traditional material known for its ability to create a deeper and fuller sound profile. This softness helps absorb sound, resulting in a rounded and muted auditory experience. In contrast, the FJ400 utilizes POM for its top housing, a material that also fosters a unique sound but deviates slightly in its acoustic properties. While both materials produce a deeper sound, the POM's characteristics create a notably distinct sound profile, albeit still leaning towards a muted quality. Thus, while the two switches differ in their top housing materials, they both deliver satisfying and enjoyable sound profiles, each with its unique nuances.
On the bottom housing front, both the EVA and FJ400 utilize nylon, which brings about consistency in both switches' performance in terms of sound and feel. The nylon bottom housing, irrespective of the top housing material, contributes to a deeper and fuller sound experience, similar to that of the EVA, as it absorbs sound effectively. Consequently, both the EVA and FJ400 ensure that the typist’s experience remains rich and engaging due to the familiar qualities of nylon. Given that both switches share this common bottom housing material, it could be expected that users might encounter similar levels of satisfaction when bottoming out, as the nylon absorbs impact and yields a satisfying auditory response.
In summary, while the primary contrast lies in the top housing materials—nylon for the EVA and POM for the FJ400—the bottoms share an identical construction, promoting consistency in their overall sound profiles. If a user were to type on both switches, they would find that the bottom-out experience is reinforced by the qualities of nylon, while the varying top materials add their unique flavor to the release sound. Thus, one would get similar results in terms of bottoming out but could appreciate the distinctive sound characteristics that come into play with each switch's top housing. The duality in material choice results in a collection of sound experiences that, while different, maintain a cohesive acoustic profile due to the nylon bottom shared by both models.
Weight
The comparison between the HMX EVA and HMX FJ400 linear switches reveals distinct differences in their actuation and bottom out forces. The EVA switch features a lighter actuation force of 42 grams and a bottom out force of 48 grams, making it suitable for users who prefer a lighter touch for prolonged typing or gaming sessions. In contrast, the FJ400 requires a slightly heavier actuation force of 50 grams and a bottom out force of 58 grams, appealing to those who favor a more substantial and tactile typing experience. As such, while both switches provide a linear feel, the EVA switch is ideal for those seeking comfort over extended use, whereas the FJ400 caters to individuals looking for a firmer keystroke response. Overall, the EVA switch is the lighter option, while the FJ400 is the heavier one.
Travel distance
When comparing the travel distances of the HMX EVA linear switch and the HMX FJ400 linear switch, we find that the EVA features a travel distance of 3.6 mm, while the FJ400 has a slightly longer travel distance of 3.8 mm. This means that the EVA switch is the shorter option, making it potentially more suitable for users who favor quicker response times, such as gamers. Conversely, the FJ400's longer travel distance may cater to those who appreciate a more substantial keystroke feel and deeper engagement with each press. While both switches fall within a relatively common range for linear switches, their differences highlight the trade-offs between responsiveness and depth that users may want to consider based on their preferences.
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 HMX FJ400 has an MSRP of $3.50 per 10 switches. At Milktooth, we are able to pass on savings to our customers and offer the FJ400 for $3.29.
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
In terms of sound, the HMX EVA linear switch is characterized by a resonant sound signature that sets it apart, likely providing a richer auditory experience while typing. This unique sound may appeal to those who appreciate a more pronounced feedback in their sound profile, enhancing the overall typing experience. On the other hand, the HMX FJ400 linear switch offers a balanced sound profile that serves as a versatile option suitable for various setups. The balance in sound may be preferable for users seeking a more understated auditory experience. It’s worth noting that the final sound experience can still be influenced by factors such as the keyboard build and the type of keycaps used.
Regarding feel, the HMX EVA linear switch is renowned for its silky smooth typing experience, which contributes to a pleasant and enjoyable interaction with the keyboard. This smoothness may be particularly appealing to typists who favor an unobstructed keypress without tactile bumps or resistance. In contrast, the HMX FJ400 is designed as a middle ground within the HMX Film switch lineup, likely suggesting a more neutral feel that balances between various tactile experiences. For users, this means that while both switches maintain a linear action, the EVA may offer an elevated smoothness that some might find preferable in a typing experience.
Overall, both switches present unique characteristics that cater to different user preferences. The HMX EVA excels in delivering a distinct sound signature and a silky smooth feel, ideal for those looking for a more engaging typing experience. Meanwhile, the HMX FJ400 provides a balanced sound and a feel that sits comfortably between varying tactile sensations. Users can achieve satisfactory results with either switch based on their individual needs, but those who prioritize auditory and tactile distinctiveness may gravitate towards the EVA, while others might appreciate the FJ400's versatility.
Conclusion
To conclude, when choosing between the HMX EVA linear switch and the HMX FJ400 linear switch, it’s essential to consider your specific preferences and typing style. If you prefer a lighter touch and enjoy a switch that offers a silky smooth typing feel along with a more resonant sound signature inspired by the iconic colors of Evangelion Unit-01, then the HMX EVA would be the ideal choice for you. This switch is perfect for fast typists or gamers who appreciate a more tactile and engaging experience without exerting too much force. On the other hand, if you're looking for a balanced medium-resistance switch that provides a sturdy typing experience with a more neutral sound profile, the HMX FJ400 is likely the better option. This switch caters well to those who value consistency and tactile feedback without being overly taxing on the fingers. Ultimately, your choice should reflect your ergonomic needs and sound preferences, ensuring that your keyboard feels just right for your personal usage.
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