HMX FJ400 vs. Bsun Taichi
An in-depth look at the HMX FJ400 and the Bsun Taichi switches—which one is the best fit for you?
Overview
When it comes to choosing mechanical keyboard switches, the HMX FJ400 and the Bsun Taichi offer distinct experiences, even as linear switches. The FJ400 stands out in the HMX Film switch lineup as a balanced option, providing a satisfying sound profile that appeals to many users seeking a versatile typing experience. Its well-rounded characteristics make it a great pick for those looking to strike a balance between typing comfort and a pleasant auditory feedback. On the other hand, the Bsun Taichi is celebrated for its enchanting high-pitched bottom-out sound, thanks to its long-pole stem and extended springs, which deliver an unparalleled smoothness and stability. This makes the Taichi particularly appealing for enthusiasts who prioritize a unique auditory signature alongside a seamless feel when typing. Both switches have their merits, catering to different preferences and typing styles; 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
40g
Bottom-out force
58g
Bottom-out force
N/A
Pre-travel
2.00 mm
Pre-travel
2.00 mm
Total travel
3.80 mm
Total travel
3.60 mm
Factory lubed
Yes
Factory lubed
Yes
Stem construction
Standard
Stem construction
Partial box
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
21mm single-staged spring
Housing materials
The housing materials used in the HMX FJ400 and the Bsun Taichi switches present a fascinating contrast in terms of sound profiles and aesthetic qualities. The FJ400 features a POM (Polyoxymethylene) top housing, known for producing a pleasing, muted sound with deeper tonal characteristics. In contrast, the Taichi opts for a polycarbonate top housing, which is recognized for its ability to generate a sharper, crisper sound profile that can resonate more vibrantly. This fundamental difference in top housing materials means that users may experience distinctly different auditory feedback when interacting with each switch, with the POM housing providing a more subdued response or "thump," while the polycarbonate housing leans towards a brighter, more pronounced sound.
Both switches utilize nylon for their bottom housings, which underscores a shared heritage in sound and tactile experience. Nylon is celebrated as a classic switch housing material due to its softer composition, which contributes to a deeper and fuller sound by muffling overtones more effectively than harder plastics. This commonality in bottom housing allows both the FJ400 and Taichi to share a degree of auditory warmth and a rounder sound despite their differences in the top housing materials. Thus, while the top housings create diverse acoustic environments, the nylon bottoms ensure a consistent deeper tone that enhances the overall typing experience for both models.
Ultimately, the combined effects of the distinct top housing materials and the shared nylon bottom housing lead to unique yet somewhat complementary sound profiles in the FJ400 and Taichi switches. A user pressing the FJ400 will encounter a deeper sound upon bottoming out contrasted with the sharper release due to the POM top, whereas the Taichi will provide a bright, impactful sound with a fuller echo upon pressing through due to the nylon bottom. The differences in response upon release and bottom-out essentially offer users a varied auditory experience tailored by the top materials, while the nylon bottoms consistently provide that fuller sound foundation. Hence, while the switches resonate differently, they can create a satisfying experience when leveraging their combined properties effectively.
Weight
When comparing the HMX FJ400 linear switch to the Bsun Taichi linear switch, we find notable differences in their actuation forces, which affect user experience. The FJ400 boasts an actuation force of 50 grams, while the Taichi offers a lighter actuation force of 40 grams. This makes the Taichi better suited for users who prefer a lighter touch, potentially enhancing comfort during extended typing sessions or gaming marathons. However, the bottom out force of the Taichi is not available, making it difficult to directly compare the complete keypress experience with that of the FJ400, which has a bottom out force of 58 grams. The FJ400’s medium bottom out force suggests a more substantial feel, appealing to those who favor a stronger push. Overall, while both switches cater to different preferences, the FJ400 is the heavier option, whereas the Taichi, with its lighter actuation force, may be ideal for users looking for a softer touch.
Travel distance
When comparing the travel distances of the HMX FJ400 linear switch and the Bsun Taichi linear switch, there is a noticeable difference in their measurements. The FJ400 features a travel distance of 3.8 mm, while the Taichi has a slightly shorter travel distance of 3.6 mm. This makes the FJ400 the longer option, providing a greater depth that some users might find preferable for a more substantial typing experience. On the other hand, the Taichi's shorter travel distance may cater more towards gamers or those who favor quicker response times. Thus, while both switches offer unique advantages, the FJ400 will be more suitable for those seeking a fuller feel, whereas the Taichi might attract users looking for speed and responsiveness.
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 Bsun Taichi has an MSRP of $2.75 per 10 switches. At Milktooth, we are able to pass on savings to our customers and offer the Taichi for $2.25.
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 presents a balanced sound profile that fits well within the middle ground of the HMX Film switch lineup. This suggests a sound that is neither too muted nor overly loud, making it versatile for different environments. On the other hand, the Bsun Taichi linear switch is characterized by its enchanting high-pitched bottom-out sound, attributed to its long-pole stem, extended springs, and walled stems. This design contributes to a more pronounced acoustic signature, providing a distinct auditory feedback that can be quite pleasant for those who appreciate a clearer sound when typing or gaming. It’s worth noting that the final outcome of sound will also heavily rely on your choice of keyboard and keycaps, which can amplify or dampen these inherent qualities.
When it comes to feel, the FJ400 offers a smooth typing experience that is likely reminiscent of many traditional linear switches, allowing for uninterrupted keystrokes and a satisfying actuation without any tactile bumps. Meanwhile, the Taichi switch is designed with a focus on unparalleled smoothness and stability, which is enhanced by its long-pole stem and extended spring. This could result in a more refined and cushioned feel, particularly during longer typing sessions. While both switches aim for a seamless experience, the intricate design of the Taichi may provide an edge in terms of smoothness, appealing to enthusiasts who seek that added layer of refinement in their typing experience.
Overall, both the HMX FJ400 and Bsun Taichi linear switches cater to different preferences while retaining their unique qualities. The FJ400’s balanced sound and smooth feel make it a reliable choice for everyday use, while the Taichi’s high-pitched sound and refined smoothness create a more specialized experience for aficionados. Ultimately, your decision may come down to personal preference regarding sound and feel, but both options promise an enjoyable typing experience.
Conclusion
To summarize, the choice between the HMX FJ400 and Bsun Taichi linear switches largely depends on your specific typing preferences and the overall experience you seek. If you prefer a balanced feel and sound profile while maintaining a medium bottom-out force of 58 grams, the FJ400 is likely the better option for you. It strikes a good balance, making it suitable for both typing and gaming without overwhelming your fingers. On the other hand, if you are drawn to a more unique auditory experience and the sensation of unparalleled smoothness that comes from the long-pole stem and extended springs of the Bsun Taichi, you might find yourself gravitating towards this switch. Its enchanting high-pitched bottom-out sound and stability can add an extra layer of satisfaction to your typing experience, especially if sound is an important factor for you. Ultimately, assess what aspects matter most to you—whether it's the tactile feedback, sound profile, or weight—and make your choice accordingly for the most enjoyable mechanical keyboard experience.
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