HMX FJ400 vs. TTC Yunhai
An in-depth look at the HMX FJ400 and the TTC Yunhai switches—which one is the best fit for you?
Overview
When it comes to choosing the right mechanical keyboard switch, the HMX FJ400 and TTC Yunhai linear switches represent two distinct options that cater to different user preferences. The FJ400, positioned as the middle ground in the HMX Film switch lineup, is celebrated for its balanced sound profile, providing a satisfying yet not overly pronounced acoustic experience, making it an excellent choice for those who value a harmonious blend of response and noise. In contrast, the TTC Yunhai switches deliver a unique typing experience characterized by a deep, rounded sound profile and an incredibly light actuation force, appealing to typists who enjoy a gentle, effortless keystroke. While both switches excel in their linear design, the FJ400 offers a more moderate tactile response, while the Yunhai is tailored for those seeking an ultra-light touch. However, let's dive in a bit deeper beyond generalities so you can best decide on the perfect switch for your typing needs.
By the numbers
Technical specifications
Actuation force
50g
Actuation force
42g
Bottom-out force
58g
Bottom-out force
50g
Pre-travel
2.00 mm
Pre-travel
1.50 mm
Total travel
3.80 mm
Total travel
3.60 mm
Factory lubed
Yes
Factory lubed
Yes
Stem construction
Standard
Stem construction
Standard
Stem material
T2
Stem material
POK
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
23mm single-stage spring
Housing materials
The housing materials of the HMX FJ400 and the TTC Yunhai showcase notable differences in their top components, while they share a remarkable similarity in their respective bottom housings. The FJ400 features a POM (polyoxymethylene) top housing, renowned for creating a unique and pleasing sound profile that leans toward a deeper and more muted characteristic. In contrast, the Yunhai employs nylon for its top housing, a material recognized for its softer texture which enables sound absorption, producing a fuller and rounder auditory experience. The divergence in their top housing materials contributes to distinct sound profiles, where the FJ400's POM housing offers a more controlled acoustic presence, whereas the Yunhai's nylon component enhances the warmth of the sound.
Both switches, however, display a consistent choice regarding their bottom housing, utilizing nylon. This shared material underscores a significant trait in both designs, contributing to a deeper and fuller sound profile. Because nylon is softer and adept at absorbing sound, users can expect a similar auditory experience when pressing down on the switches. The difference arises predominantly during the release of each key: the FJ400's POM top housing will yield a more muted resonance while the Yunhai's nylon top will facilitate a rounder sonic relief. Notably, in both cases, the bottom nylon housing plays an integral part in shaping the overall typing experience, especially regarding the bottom-out feel, which remains consistent across both models.
In summary, the comparison between the HMX FJ400 and the TTC Yunhai highlights the influence of housing materials on switch performance. While the FJ400 utilizes a POM top housing for a distinct sound profile, the Yunhai's nylon top brings a softer, more voluminous acoustic quality. Nonetheless, their shared nylon bottom housing creates a common ground in terms of sound depth and typing experience. Ultimately, the differences in top housing materials will manifest most prominently in the key release sound, while the full-bodied characteristics provided by the nylon bottom housing ensure a reasonable similarity in tactile feedback and sound depth across both switches.
Weight
When comparing the actuation force and bottom out force of the HMX FJ400 linear switch and the TTC Yunhai linear switch, notable differences emerge that cater to varying user preferences. The FJ400 has an actuation force of 50 grams and a bottom out force of 58 grams, providing a medium resistance that can offer a more substantial typing experience. Conversely, the Yunhai linear switch features a lighter actuation force of 42 grams and a bottom out force of 50 grams, making it easier to press and likely more comfortable for extended typing sessions. Ultimately, this means the FJ400 is the heavier switch, appealing to those who appreciate a stronger push feel, while the Yunhai is the lighter option, ideal for users seeking a less fatiguing experience.
Travel distance
When comparing the travel distances of the HMX FJ400 linear switch and the TTC Yunhai linear switch, the FJ400 measures 3.8 mm, while the Yunhai is slightly shorter at 3.6 mm. The difference of 0.2 mm may seem minor, yet it can influence the typing experience significantly. Gamers often favor the shorter travel of the Yunhai for its quicker actuation and responsiveness, which can enhance performance in fast-paced situations. In contrast, the FJ400's longer travel distance may provide a more pronounced tactile experience for those who prefer depth in their key presses. Ultimately, the choice between the two will depend on individual preferences for responsiveness versus a more substantial feel during use.
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 TTC Yunhai has an MSRP of $7.50 per 10 switches. At Milktooth, we are able to pass on savings to our customers and offer the Yunhai for $5.99.
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 features a balanced sound profile, striking a middle ground that provides a pleasant auditory experience without being overly pronounced or muted. This makes it versatile for a variety of environments, whether you’re in a quiet office or at home. In contrast, the TTC Yunhai linear switch produces a deeper and more rounded sound, which may create a more satisfying auditory feedback when typing, especially for those who appreciate a richer sound in their keystrokes. Both switches' sonic characteristics can be influenced by the choice of keyboard and keycaps, but the fundamental sound qualities set them apart.
When it comes to the feel, the FJ400 is well-regarded for offering a smooth tactile experience that appeals to a wide range of typists. It provides enough resistance to give a sense of control without being too heavy. On the other hand, the TTC Yunhai linear switch features an incredibly light actuation force, making it ideal for users who prefer a more effortless sensation while typing. This lightness can enhance speed and decrease fatigue during long typing sessions, but it can also make it less suitable for those who like more feedback or resistance in their switches.
In summary, while the HMX FJ400 linear switch and the TTC Yunhai linear switch both serve the purpose of providing a smooth and enjoyable typing experience, they differ distinctly in sound and feel. The FJ400 offers a balanced sound and a controlled typing experience, whereas the Yunhai delivers a deeper sound complemented by an incredibly light actuation force, catering to those who prefer an effortless feel. Ultimately, your choice between the two will depend on your personal preferences for sound and actuation feel, allowing for a tailored typing experience.
Conclusion
To conclude, when deciding between the HMX FJ400 linear switch and the TTC Yunhai linear switch, it ultimately comes down to your personal preferences and intended use. If you prefer a switch with a moderate bottom-out force of 58 grams that offers a balanced sound profile, the FJ400 could be your best bet. It's suitable for a typing experience that combines a satisfying tactile feedback with a medium resistance, making it ideal for people who enjoy a more deliberate typing style without excessive finger fatigue. On the other hand, if you lean towards a lighter typing feel with only 50 grams of actuation force, the Yunhai switches might be more your style. Their uniquely deep and rounded sound profile, coupled with a gentle actuation, makes them perfect for typists who appreciate a smooth and effortless typing experience, particularly for long hours of writing or programming. Ultimately, your choice should reflect how you like to type, the sound profile you prefer, and the feel you find most comfortable.
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