HMX FJ400 vs. HMX Gravel
An in-depth look at the HMX FJ400 and the HMX Gravel switches—which one is the best fit for you?
Overview
When it comes to choosing the right mechanical keyboard switch, the HMX FJ400 and HMX Gravel both offer unique experiences that cater to different typing preferences. The HMX FJ400 serves as a well-rounded option within the HMX Film switch lineup, providing a balanced sound profile that appeals to users who enjoy a moderate auditory feedback while they type. In contrast, the HMX Gravel switches stand out for their exceptional smoothness and refined typing feel, featuring a medium-light actuation force that makes each keystroke feel responsive and effortless. While the FJ400 leans towards being versatile for various applications, the Gravel might attract those who prioritize a silky-smooth experience in their typing sessions. 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
50g
Actuation force
45g
Bottom-out force
58g
Bottom-out force
50g
Pre-travel
2.00 mm
Pre-travel
2.00 mm
Total travel
3.80 mm
Total travel
3.50 mm
Factory lubed
Yes
Factory lubed
Yes
Stem construction
Standard
Stem construction
Standard
Stem material
T2
Stem material
POM
Top housing material
POM
Top housing material
Polycarbonate
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
The HMX FJ400 and HMX Gravel switches feature distinctly different designs in their top housing materials, resulting in contrasting sound profiles that cater to varying preferences among users. The FJ400 utilizes a POM (polyoxymethylene) top housing, which produces a deeper and more muted sound profile. This characteristic can appeal to users seeking a more subdued auditory experience while typing. In contrast, the Gravel incorporates a polycarbonate top housing, known for its rigidity and excellent sound clarity, resulting in a sharper, higher-pitched, and crisper sound profile. While the audible qualities differ significantly due to the choice of materials, users who desire a unique sound experience from their mechanical switches may appreciate the benefits provided by each housing's material properties.
In terms of their bottom housing, both the FJ400 and Gravel models utilize nylon, a classic material known for its sound-dampening qualities. The nylon bottom housing contributes to a fuller and deeper sound experience, as it absorbs vibrations more effectively than harder plastics. This similarity in bottom housing material means that, irrespective of the differences in their top housing, users can expect the sound profile when bottoming out the switch to be consistently rich and rounded across both models. Thus, the nylon bottom housing enhances the overall typing experience in both switches, ensuring that the full depth of sound is achievable even with the contrasting top materials.
Despite distinct differences in the top housing materials, both switches synergize through their shared nylon bottom housing. This combination allows for an intriguing balance; each switch offers a nuanced auditory experience driven by the materials in their top housings while maintaining a fundamental richness in sound upon key release courtesy of the nylon bottoms. As a result, users can essentially choose between the FJ400's mellow and deeper sound or the Gravel's brighter and crisper sound without sacrificing the foundational base that the nylon bottom provides, showcasing how variations in housing materials impact the overall switch performance while still offering cohesive sound qualities.
Weight
The HMX FJ400 linear switch and the HMX Gravel linear switch differ in both actuation force and bottom out force, catering to varying user preferences. The FJ400 has an actuation force of 50 grams and a bottom out force of 58 grams, making it a medium switch that provides a more substantial typing experience. In contrast, the Gravel features a lighter actuation force of 45 grams and a bottom out force of 50 grams, appealing to users who favor a softer touch for extended typing sessions or gaming. Consequently, those who prefer a lighter switch would benefit from the Gravel, as it requires less effort to engage, while users who appreciate a heavier feel may find the FJ400 more satisfying. Overall, the Gravel is the lighter option, while the FJ400 is the heavier choice, with their differences in actuation and bottom out forces contributing to distinct tactile experiences.
Travel distance
When comparing the travel distances of the HMX FJ400 linear switch and the HMX Gravel linear switch, we find that the FJ400 has a travel distance of 3.8 mm, while the Gravel measures 3.5 mm. This makes the Gravel the shorter option, offering a more responsive keypress that is often favored by gamers for quicker response times. In contrast, the FJ400 provides a slightly longer travel distance, which some users might prefer for a more satisfying tactile experience and a less abrupt feel. Ultimately, both switches cater to different user preferences, with the FJ400 appealing to those who enjoy a bit more depth in their key presses, while the Gravel attracts those looking for a faster and snappier response.
Price comparison
Which switch is more bang for your buck?
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.
The HMX Gravel has an MSRP of $3.50 per 10 switches. At Milktooth, we are able to pass on savings to our customers and offer the Gravel for $2.99.
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
The sound profile of the HMX FJ400 linear switch is characterized as balanced, allowing it to fit well in a range of environments without being overly distracting. This makes it an excellent choice for those who desire a more subtle audio experience while typing. In contrast, the HMX Gravel switch emphasizes a smooth auditory quality that complements its overall design. While the specific sound characteristics of the Gravel are not detailed, it can be inferred that the switch is designed to deliver a pleasing acoustic experience that aligns with its silky feel. However, it is essential to remember that the sound of any switch can greatly vary based on the keyboard you choose, the keycaps you use, and even your typing style.
When considering the feel of the switches, the FJ400 offers a middle ground that caters to users looking for a balanced tactile response. This balanced feel allows for a satisfying typing experience without too much resistance, making it suitable for long typing sessions. The HMX Gravel switch, on the other hand, shines with its medium-light actuation force, promoting a responsive and effortless typing experience. The silky smoothness that the Gravel switch is known for makes it a favorite among enthusiasts who prioritize comfort and efficiency while typing. Overall, both switches provide a favorable feel, though the Gravel leans into a lighter and more effortless typing experience.
In conclusion, both the HMX FJ400 and HMX Gravel linear switches offer unique advantages that cater to different preferences in sound and feel. The FJ400 provides a balanced sound profile and a middle-ground tactile experience, appealing to those who seek versatility. Meanwhile, the Gravel switch excels in smoothness and lightness, perfect for users who prioritize responsiveness. Although the Gravel's specific sound characteristics remain unspecified, users can expect a generally pleasurable auditory experience alongside its smooth feel. Whether you choose the FJ400 or the Gravel, both switches are designed to deliver a satisfying typing experience tailored to different styles and preferences.
Conclusion
To conclude, the choice between the HMX FJ400 and the HMX Gravel linear switches ultimately hinges on your personal preferences and typing style. If you appreciate a more balanced typing experience with a medium bottom-out force of 58 grams, the FJ400 is an excellent choice. Its sound profile is designed to be harmonious and offers a satisfying auditory feedback that many users find appealing. Furthermore, the FJ400 is a solid option for those who enjoy a tactile yet smooth typing feel while not feeling fatigued after prolonged use. On the other hand, if you prefer a lighter touch and are seeking an exceptionally smooth typing experience, the HMX Gravel switch with its 50-gram bottom-out force may be your best bet. The Gravel's lighter actuation makes it ideal for rapid keystrokes, perfect for gaming or intensive typing tasks, where quick and responsive feedback is essential. Additionally, its refined feel adds a level of elegance to your typing sessions. Ultimately, whether you lean towards the balanced performance of the FJ400 or the effortless smoothness of the Gravel, both switches cater to distinct tastes, ensuring you have a rewarding and personalized typing experience.
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