HMX FJ400 vs. Gazzew U4Tx RGB

Overview

When it comes to mechanical keyboard switches, choosing the right one can significantly affect your typing experience. The HMX FJ400 is a linear switch that stands out for its balanced sound profile, making it an excellent choice for those who prefer smooth keystrokes without tactile feedback. Its design caters to users looking for a versatile switch that excels in both gaming and typing, offering a satisfying experience across various applications. On the other hand, the Gazzew U4Tx RGB is a tactile switch, celebrated for its distinctive "thock" when bottoming out and a quieter "stealth" when topping out, providing a rich auditory experience alongside a pronounced tactile bump. This switch is ideally suited for those who enjoy feedback during typing, creating an engaging and luxurious atmosphere that many enthusiasts appreciate. Ultimately, the choice between the FJ400 and U4Tx comes down to personal preference regarding sound and feel. However, let's dive in a bit deeper beyond generalities so you can best decide on the switch that suits your needs.

By the numbers

HMX FJ400 Linear

Gazzew U4Tx RGB Tactile

$3.50

$3.29 per 10

$6.50 per 10

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Housing materials

When comparing the housing materials of the HMX FJ400 and the Gazzew U4Tx RGB, we note notable similarities and differences that influence their overall sound profiles. The FJ400 features a POM (Polyoxymethylene) top housing, which is known for creating a unique and pleasing sound that leans toward a deeper and more muted audio profile. In contrast, the U4Tx RGB utilizes a proprietary plastic blend often referred to as "boba plastic," which also contributes to a rich and deep sound profile. Although both materials are designed to create well-rounded sound experiences, their differing compositions lead to variations in how those sounds manifest, particularly in the nuances of tone and clarity.

The bottom housing of both switches also reflects a significant resemblance, as they employ materials characterized by their sound-absorbing qualities. The FJ400 uses nylon for its bottom housing, which is celebrated for producing a fuller sound due to its relatively softer nature, effectively dulling sharper sounds while enhancing lower frequencies. Meanwhile, the U4Tx RGB opts for its proprietary Gazzew blend for the bottom housing, which, like nylon, is soft and contributes similarly to a rich sound profile. This commonality suggests that while the overall designs of the switches differ in their top housings, users might experience comparable sound qualities when typing, particularly in the depth and muffled resonance that both designs foster.

Ultimately, the distinctive impact of each housing material is enhanced by their combination within each switch. As the top and bottom housing materials work together, the FJ400's POM top, with its muted tones, balances out the deeper sound produced by the nylon bottom, while the U4Tx RGB’s boba top and bottom work synergistically to achieve a similarly rich and deep sound profile. However, the unique characteristics of the individual materials will still emerge, especially in terms of key release sound and overall typing experience. In essence, those opting for either the FJ400 or U4Tx RGB will find that while the foundational sound qualities may align due to shared attributes of softness and sound absorption, the specific auditory characteristics will vary based on the unique properties of the chosen housing materials.

Weight

When comparing the HMX FJ400 linear switch and the Gazzew U4Tx RGB tactile switch, there are notable differences in both actuation and bottom out forces. The FJ400 has a defined actuation force of 50 grams, requiring a moderate amount of pressure to trigger a keystroke, while its bottom out force is 58 grams. In contrast, the U4Tx RGB does not have a specified actuation force, but its bottom out force is higher at 65 grams, making it feel noticeably heavier when fully pressed down. With the FJ400 being lighter in actuation force, it may be more suitable for users seeking an easier typing experience, especially for extended use where fatigue is a consideration. On the other hand, the U4Tx, being medium-heavy, offers a firmer feel for those who prefer a more substantial and pronounced typing experience. Overall, if the actuation force of the U4Tx were specified, it might help provide a clearer comparison, but as it stands, the FJ400 is lighter while the U4Tx is heavier in bottom out force.

Travel distance

When comparing the travel distances of the HMX FJ400 linear switch and the Gazzew U4Tx RGB tactile switch, we find that the FJ400 has a travel distance of 3.8 mm, while the U4Tx RGB measures 3.6 mm. This makes the U4Tx RGB the shorter option, appealing to gamers who favor quicker response times, as shorter travel distances can lead to faster actuation. In contrast, the FJ400's 3.8 mm travel distance provides a more substantial feel, catering to users who prefer a deeper and more deliberate keypress. Ultimately, the choice between these two switches will depend on individual preferences for responsiveness versus typing depth, with the FJ400 offering a more traditional and robust experience compared to the slightly more responsive U4Tx RGB.

Price comparison

Typing experience

In terms of sound, the HMX FJ400 linear switch features a balanced profile that strikes a middle ground among switches, providing a subtle and consistent noise level during typing, making it suitable for environments where discretion is desired. In contrast, the Gazzew U4Tx RGB tactile switch produces a unique auditory experience, characterized by a pronounced "thock" sound when bottoming out, accompanied by a quiet "thuk" during the top-out phase. This combination not only offers a satisfying acoustic feedback but also enhances the overall typing experience, particularly for those who appreciate lively soundscapes. Both switches will sound different depending on the keyboard build and the keycap material selected, so personal preference plays a key role here.

When it comes to feel, the FJ400 linear switch offers a smooth typing experience without tactile feedback, making it ideal for users who prefer uninterrupted keystrokes. Its linear nature results in a gradual and seamless actuation, allowing for effortless typing. On the other hand, the Gazzew U4Tx RGB tactile switch delivers a sharp tactile bump at the actuation point, providing a gratifying sensation that many typists find pleasing. The tactile feedback can enhance typing accuracy and comfort, especially for those who appreciate distinct actuation points during their typing sessions. Each switch caters to different preferences in terms of keystroke feel, making the choice largely subjective.

In conclusion, the HMX FJ400 linear switch offers a balanced sound and a smooth feel, while the Gazzew U4Tx RGB tactile switch combines a rich auditory profile with a satisfying tactile response. Your choice between these switches will ultimately depend on your personal preferences for sound and feel; if you prefer a more muted experience, the FJ400 could be your go-to, but if you enjoy a pronounced auditory and tactile experience, the U4Tx RGB may be more to your liking. Each switch has its unique characteristics, and exploring these differences can lead to the perfect mechanical keyboard setup tailored to your typing style.

Conclusion

To conclude, the choice between the HMX FJ400 linear switch and the Gazzew U4Tx RGB tactile switch largely hinges on your personal preferences and typing style. If you favor a smooth and consistent keystroke without any tactile feedback and desire a balanced sound profile, the FJ400, with its medium bottom-out force of 58 grams, is an excellent option. It's ideal for fast-paced typing and gaming scenarios where you need quick actuation without distractions. Conversely, if you appreciate the tactile feedback and a deeper, more resonant sound while typing, the U4Tx RGB is the way to go. With a medium-heavy force of 65 grams, this switch offers a pleasurable typing experience complemented by its distinct thock sound and pronounced bump. This makes it particularly appealing for those who enjoy typing and want to feel a tactile response with each keystroke. Ultimately, your choice will depend on whether you prioritize a smooth linear action or a satisfying tactile sensation, as both switches cater to different styles and preferences.

Mentioned in this article

HMX FJ400 Linear

$3.50

$3.29 per 10

Learn more

Gazzew U4Tx RGB Tactile

$6.50 per 10

Learn more