HMX FJ400 vs. Gazzew U4T

Overview

When it comes to choosing the right mechanical keyboard switch, personal preference plays a crucial role, and two popular options are the HMX FJ400, a linear switch, and the Gazzew U4T, a tactile switch. The FJ400 stands out in the HMX Film switch lineup as the middle ground, delivering a balanced sound profile that appeals to users who prefer a smoother typing experience without any tactile bumps. In contrast, the Gazzew U4T offers a delightful combination of thockiness and sharp tactility, providing not only an auditory delight with its bassy 'thock' sound but also satisfying feedback with every keystroke. The choice between these two switches ultimately hinges on whether you value a seamless linear experience or the pronounced keystroke feedback from a tactile switch. However, let's dive in a bit deeper beyond generalities so you can best decide on the switch that suits your typing style.

By the numbers

HMX FJ400 Linear

Gazzew U4T Tactile

$3.50

$3.29 per 10

$6.50 per 10

Learn moreLearn more

Housing materials

When comparing the housing materials of the HMX FJ400 and the Gazzew U4T, notable similarities and differences emerge that shape their respective sound profiles. The FJ400 features a top housing made of POM (polyoxymethylene), a material known for its capability to produce a unique and pleasing auditory experience. This housing delivers a deeper and more muted sound profile, which contrasts with the Gazzew U4T's proprietary "boba plastic" top housing. While both plastics contribute to rich soundscapes, Gazzew's blend offers a softness that accentuates a similar deep sound profile, albeit with potentially different overtones due to the unique blend of materials. Therefore, while the FJ400’s sound may be described as distinctively muted, the U4T’s softer boba plastic allows for similar rich tonal qualities, though perhaps with a different character.

Looking at the bottom housing, the FJ400 employs a classic nylon material, which is renowned for eliciting a fuller sound experience characterized by its softness and sound-dampening properties. This allows for a deeper tone as it absorbs more sound, creating a rounder auditory effect. In contrast, the Gazzew U4T also uses the proprietary Gazzew blend in its bottom housing, promoting a similarly rich sound profile thanks to its softness. Consequently, both models provide deep acoustics at bottom-out, but the nylon of the FJ400 may deliver a unique warmth compared to the Gazzew blend, leading to subtle differences in how each switch feels and sounds during key presses.

Ultimately, even though the housing materials differ between the FJ400 and U4T, the shared emphasis on soft plastics ensures that typists can expect a satisfying auditory and tactile experience. The nylon and POM of the FJ400, while separate in composition, may yield results akin to the Gazzew’s proprietary blends due to the shared characteristics of sound absorption and depth. Therefore, while the specific compositions vary, users can anticipate somewhat comparable performances in terms of sound richness and tactile pleasure, especially when considering each switch is influenced by both the top and bottom housing. The end result is switches that can deliver similarly pleasant experiences, albeit with individual nuances that reflect their distinctive materials.

Weight

The HMX FJ400 linear switch and the Gazzew U4T tactile switch exhibit notable differences in their actuation and bottom out forces. The FJ400 features an actuation force of 50 grams, while the U4T's actuation force is unknown, leaving a gap in direct comparison. However, the bottom out forces contrast more distinctly, with the FJ400's bottom out force at 58 grams and the U4T's at 65 grams, making the U4T a heavier option overall. In terms of typing experience, the lighter actuation force of the FJ400 may appeal to those who prioritize comfort for extended typing or gaming sessions, while the U4T’s heavier bottom out force will provide a more substantial tactile feedback, which may be preferred by users who enjoy a firmer typing experience. Thus, if you seek a light touch for longer use, the FJ400 could be the better choice, whereas the U4T might suit those who appreciate a stronger push feel.

Travel distance

The travel distance of the HMX FJ400 linear switch is measured at 3.8 mm, while the Gazzew U4T tactile switch has a slightly greater travel distance of 4 mm. This makes the FJ400 the shorter of the two switches, which can provide a more responsive feel that gamers often prefer. On the other hand, the U4T’s longer travel distance may offer a more satisfying depth for those who enjoy a tactile feedback experience, as it allows for a more pronounced keypress. If both switches were to have the same travel distance, users could expect similar overall responsiveness in their typing or gaming experience; however, that is not the case here, as the 0.2 mm difference means the FJ400 offers a quicker actuation, appealing to those who prioritize speed.

Price comparison

Typing experience

When it comes to sound, the HMX FJ400 linear switch delivers a balanced auditory experience, placing it comfortably in the middle ground among other switches in the HMX Film lineup. While it may not have an overt character, it creates a pleasant yet understated noise that won’t disrupt the environment, making it suitable for quiet settings. Conversely, the Gazzew U4T tactile switch stands out with its pronounced sound profile, optimally designed to create a rich auditory tapestry. The U4T produces a deep, bassy 'thock' that resonates with each keystroke, complemented by an assertive auditory response. This combination not only provides feedback but also delivers a satisfying auditory experience that can be appreciated in more vibrant settings.

In terms of feel, the FJ400 linear switch offers a smooth keypress that lacks the tactile bumpy sensation typical of tactile or clicky switches. This absence of a tactile bump allows for unimpeded travel, making it ideal for those who prefer a seamless typing experience. In contrast, the Gazzew U4T shines with its sharp tactile feedback; users will encounter a prominent tactile bump that is both distinct and engaging. This strong tactile response culminates in a feedback intensity that resonates in the fingers and makes each keypress feel intentional and precise. Such differences in feel cater to contrasting preferences, with the FJ400 appealing to those who prefer linear smoothness and the U4T satisfying those who value tactile feedback.

In summary, the HMX FJ400 linear switch and the Gazzew U4T tactile switch each cater to different desires in the keyboard enthusiast spectrum. The FJ400’s balanced sound profile and smooth feel make it an excellent choice for quiet typing environments, while the U4T’s thocky auditory response and sharp tactile feedback provide a more dynamic and engaging experience for those who appreciate pronounced tactile sensations. Ultimately, the choice between these switches will depend on individual preferences, making either option suitable for users based on their specific typing needs and environments.

Conclusion

To sum up, your choice between the HMX FJ400 linear switch and the Gazzew U4T tactile switch largely depends on your typing preferences and intended use. If you favor a smoother and quieter typing experience, and prefer a key feel that strikes a balance between responsiveness and comfort, the FJ400 would be an excellent choice, particularly for prolonged typing sessions or gaming, where you might want to avoid excessive noise. Its medium actuation force of 58 grams ensures that keys are pressed with relative ease, making it a great all-around option for both casual users and enthusiasts seeking a pleasant typing experience without overwhelming tactile feedback.

On the other hand, if you enjoy a more engaging and tactile experience, the U4T is likely the better fit. With its higher actuation force of 65 grams, it provides a pronounced tactile bump and a deeply satisfying thocky sound profile that makes every keystroke feel rewarding. This switch is perfect for those who appreciate auditory and tactile satisfaction, whether you're coding, writing, or just typing for fun. The U4T's sharp tactility ensures that you can feel each keypress distinctly, which can enhance your overall experience and engagement with your keyboard. Ultimately, consider what aspects of a keyboard switch you prioritize—smoother and quieter versus tactile and engaging—when making your decision between these two compelling options.

Mentioned in this article

HMX FJ400 Linear

$3.50

$3.29 per 10

Learn more

Gazzew U4T Tactile

$6.50 per 10

Learn more