HMX FJ400 vs. HMX Lotus (Heavy)
An in-depth look at the HMX FJ400 and the HMX Lotus (Heavy) switches—which one is the best fit for you?
Overview
When choosing the right mechanical keyboard switch, the HMX FJ400 and the HMX Lotus (Heavy) present intriguing options, both falling into the linear switch category but offering different experiences. The FJ400 is celebrated for its balanced sound profile, making it an ideal choice for users who appreciate a muted yet satisfying acoustic feedback while typing. Its middle-ground weight provides a comfortable typing experience that caters to a variety of typing styles, whether for gaming or productivity. On the other hand, the Lotus (Heavy) switch stands out with its medium-heavy weight of 62.5g and a bright, resonant sound, delivering a bouncy keystroke that adds an exciting dynamic to the typing experience. This switch is perfect for those who enjoy a more tactile sensation and a lively auditory response with each press. However, let's dive in a bit deeper beyond generalities so you can best decide on the switch that suits your personal preferences and typing habits.
By the numbers
Technical specifications
Actuation force
50g
Actuation force
55g
Bottom-out force
58g
Bottom-out force
62.5g
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
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 the HMX Lotus (Heavy) feature distinct housing materials that contribute to their respective acoustic profiles, creating unique keyboard experiences for users. The FJ400 integrates a POM (Polyoxymethylene) top housing that is acclaimed for producing a pleasing sound characterized by its deeper and more muted tones. In contrast, the Lotus (Heavy) opts for a nylon top housing, a classic material in the keyboard switch industry, which offers a sound profile that is similarly deeper and fuller. While the materials differ—POM versus nylon—the result is a comparable audio experience that leans toward the subdued end of the spectrum, making both switches appealing for users who prefer a less harsh auditory feedback.
Examining the bottom housings, both the FJ400 and the Lotus (Heavy) utilize nylon, further aligning their acoustic characteristics. The nylon bottom housing in both switches contributes to a round and dull sound, enhancing the overall deeper profile when typing. This reinforces the notion that despite their varied top housing materials, a commonality exists in the bottom housings that fosters consistency in the perceived sound signature of each switch. This shared aspect of the design indicates that users can expect a similar tactile experience at the bottom of each switch engagement, regardless of the differing top housing materials.
Ultimately, while the FJ400 and Lotus (Heavy) utilize different materials for their top housings, their nylon bottom housings help to bridge the sound profiles and tactile outcomes between the two. The POM top of the FJ400 offers a unique quality that may influence the sound upon releasing a key, whereas the nylon top in the Lotus (Heavy) emphasizes a full sound when the key is pressed. Consequently, users can appreciate distinct characteristics from both switches, yet both will yield results that satisfy those seeking a deeper and more muted auditory response overall, thanks to their shared bottom housing material.
Weight
When comparing the HMX FJ400 linear switch and the HMX Lotus (Heavy) linear switch, there are notable differences in both actuation force and bottom out force. The FJ400 has an actuation force of 50 grams and a bottom out force of 58 grams, making it the lighter option. In contrast, the Lotus (Heavy) requires a slightly greater actuation force of 55 grams and a bottom out force of 62.5 grams, positioning it as the heavier alternative. While both switches fall within the medium force range, the additional weight of the Lotus (Heavy) may appeal to users seeking a more substantial typing experience. However, for those who prefer longer typing sessions with reduced fatigue, the FJ400's lighter forces could prove advantageous. Overall, while both switches are similar in their linear design and intended for a good balance of responsiveness, their differing actuation and bottom out forces cater to distinct user preferences in typing experience.
Travel distance
When comparing the travel distances of the HMX FJ400 and the HMX Lotus (Heavy) linear switches, the FJ400 features a travel distance of 3.8 mm, while the Lotus (Heavy) measures at 3.5 mm. This indicates that the FJ400 has a longer travel distance, offering a more substantial keypress experience that some users may prefer for a hearty feel. In contrast, the Lotus (Heavy), with its shorter travel distance, may appeal more to gamers and users seeking faster response times, as shorter distances typically allow for quicker actuation. Ultimately, the choice between these two switches will depend on individual preferences for depth versus responsiveness, with the FJ400 providing a deeper keypress and the Lotus (Heavy) delivering a more immediate 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 Lotus (Heavy) has an MSRP of $3.50 per 10 switches. At Milktooth, we are able to pass on savings to our customers and offer the Lotus (Heavy) 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
In terms of sound, the HMX FJ400 linear switch offers a balanced and moderate sound profile, making it suitable for various environments without being overly loud or muted. On the other hand, the HMX Lotus (Heavy) linear switch delivers a bright and resonant sound that stands out more distinctly, which can add a bit of personality to your typing experience. While both switches produce unique auditory characteristics, the FJ400 excels at blending into quieter settings, while the Lotus (Heavy) makes a more pronounced sound that could polarize preferences based on the user’s environment.
When it comes to feel, the FJ400 and Lotus (Heavy) switches exhibit notable differences. The FJ400 is positioned as a middle ground, likely offering a smooth and consistent keystroke experience that appeals to those who enjoy a straightforward typing feel. In contrast, the Lotus (Heavy) switch incorporates a medium-heavy actuation weight of 62.5g, providing a super bouncy sensation that many typists find engaging and satisfying. While both switches are linear and lack tactile feedback, the difference in weight and bounce can affect user experience significantly, with the FJ400 offering a gentler input and the Lotus (Heavy) providing a more dynamic experience.
In conclusion, while both the HMX FJ400 and HMX Lotus (Heavy) linear switches belong to the linear category, they cater to different preferences in sound and feel. The FJ400’s balanced sound and smooth keystroke make it an excellent choice for those seeking an unobtrusive typing experience, while the Lotus (Heavy), with its bright sound and bouncy feel, appeals to users who enjoy a more pronounced auditory and tactile engagement. Ultimately, both switches offer unique characteristics that ensure satisfying performance, and users will likely find their preferences align with the distinct features each switch provides.
Conclusion
To conclude, the choice between the HMX FJ400 linear switch and the HMX Lotus (Heavy) linear switch largely depends on your preferences for feel, sound, and typing experience. If you appreciate a balanced sound profile coupled with a medium bottom-out force of 58 grams, the FJ400 is likely the better option for you. It strikes a harmonious balance that is ideal for typing comfort over long periods without overwhelming feedback. On the other hand, if you seek a more vibrant and bouncy typing sensation, the Lotus (Heavy) is an excellent choice, especially with its slightly heavier bottom-out force of 62.5 grams and its bright, resonant sound. This switch is particularly well-suited for those who enjoy a more tactile experience and find satisfaction in the dynamic feel of each keystroke. Ultimately, consider the aspects that matter most to you – whether it’s the middle ground balance of the FJ400 or the lively, pronounced feedback of the Lotus (Heavy) – to select the switch that will enhance your mechanical keyboard experience.
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