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HMX FJ400 vs. Durock Silent T1 (Shrimp)

An in-depth look at the HMX FJ400 and the Durock Silent T1 (Shrimp) switches—which one is the best fit for you?

Overview

When exploring the landscape of mechanical keyboard switches, the HMX FJ400 and Durock Silent T1 (Shrimp) present two compelling options that cater to different user preferences. The FJ400, a linear switch, is celebrated for its balanced sound profile and smooth keypress experience, making it an excellent choice for typists who prefer a quieter, uninterrupted typing flow. On the other hand, the Silent T1 offers a unique tactile experience with its medium bump and muted feedback, catering specifically to users in noise-sensitive environments who still want the satisfaction of tactile response while minimizing sound. While the FJ400 thrives in providing a seamless and whisper-quiet experience, the Silent T1 presents an attractive alternative for those who appreciate tactile feedback without excessive noise. However, let’s dive in a bit deeper beyond generalities so you can best decide on the right switch for you.

By the numbers

Technical specifications

Actuation force

50g

Actuation force

N/A

Bottom-out force

58g

Bottom-out force

67g

Pre-travel

2.00 mm

Pre-travel

2.00 mm

Total travel

3.80 mm

Total travel

4.00 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

Gold-plated

Housing materials

The housing materials of the HMX FJ400 and the Durock Silent T1 (Shrimp) present a fascinating contrast in terms of their sound profiles and characteristics. The FJ400 utilizes a POM (Polyoxymethylene) top housing, which creates a deeper, more muted sound profile. This unique auditory experience is a result of POM's properties that favor a rich and subdued resonance. In contrast, the Silent T1's top housing is made of polycarbonate, a material known for its stiffness and translucency. This results in a sharper, higher-pitched sound profile, which can enhance audio clarity and crispness. The difference in material composition thus yields a distinct sound signature — the FJ400 leans towards warmth and depth, while the Silent T1 favors brightness and clarity.

Both switches share a nylon bottom housing, which plays an essential role in shaping the overall sound experience. Nylon is celebrated for its ability to absorb sound, contributing to a fuller and more rounded auditory result. This similarity in bottom housing ensures that, regardless of the differences in the upper housings, both the FJ400 and the Silent T1 will elicit a deeper, enriched sound when pressed. As a classic material in switch construction, nylon helps maintain a certain level of consistency between these two models. The integration of nylon in both housing types reinforces the deeper sound profile, particularly during the bottoming out of each key.

Despite their differences, one interesting aspect is that the dissimilarity of the top and bottom housings allows each switch to blend their sonic qualities in unique ways. The POM top of the FJ400 can produce a more subdued release sound, while the polycarbonate top of the Silent T1 provides a bright finish. The interplay between the nylon bottoms, which absorb sound and provide a dampened resonance, adds depth to both switches’ acoustic profiles. Therefore, while audiophiles might notice distinct sound characteristics of the FJ400 and Silent T1, both designs ultimately leverage a common nylon foundation that ensures a satisfying auditory experience with a fuller sound that can resonate well during use.

Weight

When comparing the HMX FJ400 linear switch and the Durock Silent T1 (Shrimp) tactile switch, there is a notable difference in their actuation and bottom out forces. The FJ400 has an actuation force of 50 grams and a bottom out force of 58 grams, both categorized as medium. In contrast, the Silent T1 does not specify an actuation force but has a bottom out force of 67 grams, which falls into the medium-heavy category. This means that while the Silent T1 may provide a more substantial feel when bottoming out, it lacks a defined actuation force, making it challenging to directly compare in that aspect. However, in terms of overall weight, the FJ400 is the lighter option, which could be advantageous for those who prefer longer typing sessions without fatigue. Conversely, the Silent T1's heavier bottom out force may appeal to users who enjoy a stronger tactile feedback during keystrokes. Thus, the choice between these switches would depend largely on individual preferences for typing experience, with the FJ400 being more suited for those who favor a lighter touch.

Travel distance

The HMX FJ400 linear switch features a travel distance of 3.8 mm, while the Durock Silent T1 (Shrimp) tactile switch has a slightly longer travel distance of 4.0 mm. This difference highlights how the FJ400 offers a shorter travel distance compared to the more traditional 4.0 mm of the Silent T1. Gamers, who often favor quicker response times, might prefer the shorter travel of the FJ400 for its enhanced responsiveness. Conversely, those who enjoy a more pronounced depth in their keystrokes may find the Silent T1's longer travel distance more satisfying, providing a more tactile experience. Ultimately, your choice between these switches will depend on your preference for response speed versus feel.

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 Durock Silent T1 (Shrimp) has an MSRP of $7.00 per 10 switches. At Milktooth, we are able to pass on savings to our customers and offer the Silent T1 (Shrimp) for $5.57.

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

When comparing the sound qualities of the HMX FJ400 linear switch and the Durock Silent T1 (Shrimp) tactile switch, the FJ400 stands out for its balanced sound profile, offering a harmonious auditory experience that isn't excessively loud or quiet. This middle ground allows for satisfying acoustics without being disruptive, making it suitable for various environments. In contrast, the Silent T1 is characterized by its muted audio feedback, making it perfect for noise-sensitive settings. With a design that minimizes the typical sounds associated with mechanical keyboards, the Silent T1 excels in providing an almost silent experience while still delivering tactile feedback.

In terms of feel, the FJ400's characteristics are not explicitly stated, but it is known for being a linear switch, which typically implies a smooth and consistent keystroke without any tactile bump. On the other hand, the Silent T1 offers a unique stepped tactile experience with a medium bump. This results in a feeling that combines pre-travel and post-travel feedback, meaning that the switch has defined stages through the keystroke, enhancing user interaction. Additionally, the Silent T1 is described as accented, indicating that it provides a noticeable tactility that isn’t overwhelming, allowing for a refined typing experience. The tactile feedback is further complemented by a polished feel, with smoother key travel that reduces friction, likely due to high-quality materials and effective lubing.

Overall, while the HMX FJ400 and the Durock Silent T1 (Shrimp) switches differ significantly in sound and tactile feedback, they cater to distinct preferences in the mechanical keyboard community. The FJ400's balanced sound profile suits those who enjoy a traditional typing experience, while the Silent T1 is tailored for users seeking a quieter yet tactile sensation. If sound and feel are critical factors for you, aligning your choice with your desired typing environment and personal preferences is essential to achieving satisfaction in your mechanical keyboard experience.

Conclusion

To wrap up, your choice between the HMX FJ400 linear switch and the Durock Silent T1 (Shrimp) tactile switch ultimately depends on your typing preferences and environment. If you seek a smooth and balanced typing experience without any tactile feedback, the FJ400 is a great option, especially for gaming or fast typing due to its lighter 58-gram bottom-out force and even sound profile. This switch will allow you to enjoy a more linear feel without the interruption of tactile feedback, giving you fluid keypresses ideal for quick actions. Conversely, if you prefer a switch that provides feedback with each keystroke while minimizing noise, the Silent T1 (Shrimp) is an excellent choice. Its medium-heavy 67-gram actuation force, combined with a stepped tactile feel and muted sound, makes it particularly suitable for quieter environments or shared workspaces, allowing you to type efficiently with feedback without being disruptive. By identifying what you value most in your typing experience—whether it’s a smooth, linear action or a tactile, quieter feel—you can make an informed decision that enhances your overall keyboard experience.

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