HMX FJ400 vs. HMX Jammy
An in-depth look at the HMX FJ400 and the HMX Jammy switches—which one is the best fit for you?
Overview
When it comes to selecting the perfect mechanical keyboard switch, the HMX FJ400 and HMX Jammy stand out as intriguing linear options, each catering to distinct user preferences. The FJ400 shines in the HMX Film switch lineup, known for its balanced sound profile that strikes a harmonious chord between feedback and silence, making it an excellent choice for both typing and gaming environments. On the other hand, the HMX Jammy features softly constructed, glittery nylon housings that provide a muted yet deeply satisfying typing experience — ideal for those who prioritize comfort and subtlety in their keystrokes. Both switches offer unique attributes suited to different users, whether it be the balanced acoustics of the FJ400 or the smooth, cushioned feel of the Jammy. 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
57g
Bottom-out force
58g
Bottom-out force
63g
Pre-travel
2.00 mm
Pre-travel
2.00 mm
Total travel
3.80 mm
Total travel
3.70 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
Nylon
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-staged spring
Housing materials
The HMX FJ400 and HMX Jammy present an interesting comparison in their housing materials, particularly in their top housings. The FJ400 features a POM top housing, known for producing a distinct sound profile that leans toward deeper and more muted characteristics. This housing material, generally regarded as harder than nylon, contributes to a crisper sound when the key is released. On the contrary, the Jammy utilizes a nylon top housing, celebrated for its classic qualities that yield a deeper and fuller sound. The softer nature of nylon means it absorbs sound more effectively, resulting in a mellower auditory experience. This contrast in material choices implies that while both keyboards produce rich sound profiles, the FJ400 lends itself to a clearer pop upon key release, whereas the Jammy cultivates a more enveloping acoustic atmosphere.
When examining the bottom housings, the comparison between the FJ400 and Jammy shows significant similarities. Both models feature nylon for their bottom housings, creating a cohesive sound profile that emphasizes depth and fullness. Like the top housing of the Jammy, the nylon bottom housing in the FJ400 plays a crucial role in defining both the tactile feel and bottom-out sound when the key is pressed. Since nylon is effective in sound absorption, both keyboards will produce a similar auditory experience upon key presses, creating a duller and rounder sound that enhances overall comfort and acoustic richness. The shared use of nylon for both the FJ400 and Jammy's bottom housings underscores the intention behind these designs to provide a sensorial typing experience that caters to users desiring softer acoustics.
In summary, while the FJ400 and Jammy use different materials for their top housings, their bottom housings are identical in their nylon construction. This makes for complementary sound profiling across both models: the POM top of the FJ400 offers a unique auditory sharpness at the key release, juxtaposed against the mellowness of the Jammy's nylon top. However, the shared nylon bottom housing ensures that users can expect a consistent experience when it comes to key presses, maintaining a fullness and depth in sound regardless of which model they choose. This synthesis of materials illustrates how the distinct acoustic qualities and the tactile interactions contribute to each keyboard's unique experience while still aligning in certain respects.
Weight
The HMX FJ400 and HMX Jammy linear switches present interesting contrasts in their actuation and bottom out forces. The FJ400 features an actuation force of 50 grams and a bottom out force of 58 grams, while the Jammy requires a slightly heavier actuation force of 57 grams and a bottom out force of 63 grams. This means that users of the Jammy switch may experience a more substantial typing feel, making it more suitable for those who prefer a firmer push. On the other hand, the lighter actuation force of the FJ400 could appeal to typists or gamers who enjoy longer sessions without fatigue. Despite both switches falling into the medium category, the FJ400 is the lighter option overall, while the Jammy provides a more robust typing experience for those who favor a heavier switch feel.
Travel distance
When comparing the travel distances of the HMX FJ400 linear switch and the HMX Jammy linear switch, we find that the FJ400 has a travel distance of 3.8 mm, while the Jammy measures slightly shorter at 3.7 mm. This makes the FJ400 the switch with the longer travel distance, providing a more substantial feel when pressed down. In contrast, the Jammy’s shorter travel distance may offer quicker key presses, which could be beneficial for gamers seeking faster response times. Ultimately, if you prefer a more pronounced depth in your keystrokes, the FJ400 would be the better option, whereas if you favor a swifter touch with potentially less resistance, the Jammy would suit your needs well.
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 Jammy has an MSRP of $3.50 per 10 switches. At Milktooth, we are able to pass on savings to our customers and offer the Jammy 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 HMX FJ400 linear switch boasts a balanced sound profile, making it a versatile choice that strikes a comfortable middle ground in the HMX Film switch lineup. This balanced audio signature allows it to fit seamlessly into various environments, whether for gaming or typing, without being overly intrusive. On the other hand, the HMX Jammy switch features a softer sound that is distinctly muted, complemented by its glittery nylon housings. This design contributes to a pleasant acoustic experience that is less jarring compared to other switches, enhancing the overall ambiance of your typing experience while still providing satisfying auditory feedback.
When it comes to feel, the FJ400 offers a well-rounded typing experience that balances smoothness with enough resistance to provide tactile feedback without being fatiguing over long sessions. This makes the FJ400 a reliable option for users who appreciate linear switches with a touch of resistance. In contrast, the Jammy switch is characterized by its medium weight and a smoother actuation, offering a deeply satisfying feel that many users find comforting and easy to type on for extended periods. The softer housing material also contributes to a cushioned feel, which can enhance the experience for those who prefer a gentler touch.
In conclusion, while the HMX FJ400 and HMX Jammy linear switches offer different auditory experiences—one being balanced and versatile, the other muted and gentle—they both cater to users who seek a smooth typing experience. In terms of feel, the FJ400 provides a stable yet responsive sensation, while the Jammy focuses on comfort with its softer actuation. Ultimately, your choice between these switches will depend on your personal preferences regarding sound and feel, but both will deliver satisfying results overall.
Conclusion
To conclude, choosing between the HMX FJ400 and the HMX Jammy linear switches ultimately comes down to your personal preferences and typing style. If you seek a balanced sound profile and a medium actuation force that strikes a good equilibrium between responsiveness and effort, the FJ400 might be your best bet. Its appeal lies in its versatility, making it suitable for both gaming and prolonged typing sessions without sacrificing comfort. On the other hand, if you prefer a quieter, more subdued typing experience with a slightly heavier feel, the Jammy switch could be the ideal choice. Its softer, glittery nylon housing enhances your tactile interaction and provides a satisfying sensation, making it great for those who value a muted sound when typing. Overall, understanding your needs—whether you prioritize a balanced audible feedback or a plush, quieter touch—will guide you in selecting the switch that best enhances your mechanical keyboard experience.
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