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HMX Jelly vs. Gazzew U4

An in-depth look at the HMX Jelly and the Gazzew U4 switches—which one is the best fit for you?

Overview

When it comes to choosing the perfect mechanical keyboard switch, enthusiasts often grapple with the decision between linear and tactile options, as exemplified by the HMX Jelly and the Gazzew U4. The HMX Jelly switches are lauded for their remarkably smooth keystrokes, bolstered by excellent factory lubrication, and they offer a lightweight actuation force of just 42g. Their low-pitched, thocky sound signature delivers a satisfying auditory experience, ideal for those who prioritize speed and fluidity in typing. In contrast, the Gazzew U4 switches provide a distinct tactile feedback, characterized by a sharp and exhilarating bump during keypresses, as well as a plush, felt-like bottom-out experience that adds a layer of comfort while typing. Quiet yet engaging, the U4s present a muted sound profile that is perfect for shared environments. Both switches offer unique benefits depending on individual preferences—whether you prefer the smooth linear feel of the Jelly or the tactile sensation of the U4. 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

Technical specifications

Actuation force

42g

Actuation force

45g

Bottom-out force

48g

Bottom-out force

62g

Pre-travel

2.00 mm

Pre-travel

N/A

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

POM

Top housing material

Nylon

Top housing material

Proprietary Gazzew blend

Bottom housing material

Nylon

Bottom housing material

Proprietary Gazzew blend

Mount type

PCB (5-pin)

Mount type

PCB (5-pin)

Spring

22mm extended single-stage spring

Spring

Stainless steel 14mm Korean spring

Housing materials

The HMX Jelly and the Gazzew U4 both utilize materials renowned for their acoustic properties, although they differ in their specifications. The Jelly employs a nylon top housing, a classic choice that is celebrated for its ability to absorb sound due to its softer plastic composition. This results in a deeper, fuller sound profile when typing. Similarly, the Gazzew U4's top housing uses a proprietary blend known as "boba plastic," which also offers a soft texture, leading to a similarly rich and deep acoustic experience. While the specific formulations differ, both materials contribute to the overall auditory satisfaction users experience, each enriching the sound profile in its own right.

In terms of the bottom housing, both switches again reflect a parallel in their sound characteristics. The Jelly features a nylon bottom housing that continues the theme of sound absorption and richness, just like the Gazzew U4, which also incorporates its proprietary PLASTIC blend in the bottom housing. Both materials share a common trait of softness, which enhances the typing experience by reducing prominent higher-pitched sounds and creating a distinctly warmer auditory environment. This consistency across both switches reinforces the notion that users can expect a similarly pleasing sound profile, even if the technical compositions are not identical.

Despite the differing materials in the top and bottom housings, the fundamental acoustic qualities maintain a cohesive relationship across both models. The way the materials interact when the key is pressed influences sound output—in the Jelly, the nylon absorbs sound effectively in both the top and bottom, while the Gazzew's "boba plastic" does the same even though it has a distinct formulation. This means that regardless of the precise materials, both switches will yield a similar auditory result; they will both create a deeper, rounder sound with a pleasing typing feel. Users looking for a muted and satisfying keypress experience will find that both switches deliver in this regard, thanks to the inherent properties of their respective housing materials.

Weight

When comparing the HMX Jelly linear switch and the Gazzew U4 tactile switch, notable differences arise in their actuation and bottom out forces. The Jelly features a lighter actuation force of 42 grams, allowing for a more effortless typing experience, making it ideal for extended use during work or gaming sessions. In contrast, the U4 has a higher actuation force of 45 grams, providing a slightly more substantial feel that some users might prefer for a more tactile typing experience. Additionally, the bottom out force of the Jelly is 48 grams, whereas the U4's bottom out force is significantly heavier at 62 grams. This means that the U4 offers a firmer feedback when pressed all the way down, which could appeal to those who enjoy a stronger push feel. Overall, the HMX Jelly is the lighter option, catering to those who prioritize comfort during long typing sessions, while the Gazzew U4 is heavier, offering a more substantial experience for users who desire a firmer keystroke.

Travel distance

When comparing the travel distances of the HMX Jelly linear switch and the Gazzew U4 tactile switch, the HMX Jelly features a travel distance of 3.8 mm, while the Gazzew U4 has a slightly shorter distance of 3.6 mm. This means that the Jelly switch offers a deeper and possibly more pronounced keystroke, which some users might find more satisfying, especially if they prefer a hearty depth in their typing experience. In contrast, the shorter travel distance of the U4 switch could be more appealing for gamers or users seeking faster response times due to its quicker actuation. Ultimately, if you are looking for a switch that feels more abrupt and responsive, the Gazzew U4 would be the better choice, while those who favor a more traditional and deeper feedback may prefer the HMX Jelly.

Price comparison

Which switch is more bang for your buck?

The HMX Jelly has an MSRP of $3.50 per 10 switches. At Milktooth, we are able to pass on savings to our customers and offer the Jelly for $2.99.

The Gazzew U4 comes in at $6.50 per 10 switches.

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 sound profile of the HMX Jelly linear switch is characterized by a low-pitched, thocky signature, providing a deeper and more resonant auditory experience. This is contrasted by the Gazzew U4 tactile switch, which offers a muted sound, minimizing the typical clatter associated with mechanical keyboards. The U4 is designed to be whisper quiet, resulting in a more subtle sound profile that combines a low-pitched tone with a plush, softer ending to each keystroke. While both switches prioritize a low-pitched sound, the Jelly's deeper resonance may appeal to those looking for a more pronounced auditory experience compared to the U4's quiet sophistication.

In terms of feel, the HMX Jelly linear switch boasts a super smooth typing experience attributed to its factory lubrication and a lightweight actuation force of 42 grams. This makes every keypress effortless and fluid, ideal for users who prefer a seamless and fast response. On the other hand, the Gazzew U4 tactile switch offers a sharp, exhilarating tactile bump that provides strong feedback with each key press, making it particularly satisfying for users who enjoy a pronounced tactile sensation. The U4 also boasts a plush, felt-like bottom-out feeling, adding a layer of comfort that makes each keystroke enjoyable. While the Jelly is smooth and lightweight, the U4 offers distinct tactile feedback, catering to different typing preferences.

Overall, both the HMX Jelly linear switch and the Gazzew U4 tactile switch present unique advantages depending on personal preference. If you prioritize a smooth, low-pitched sound with lightweight actuation, the Jelly is your best bet. Conversely, if you enjoy tactile feedback paired with a quiet and plush bottom-out sensation, the U4 may be the better choice for you. Ultimately, both switches can deliver satisfying typing experiences, but the decision hinges on whether you prefer a linear feel versus a tactile response.

Conclusion

To conclude, your choice between the HMX Jelly linear switch and the Gazzew U4 tactile switch ultimately hinges on your personal preferences for typing feel, sound profile, and the intended use of your keyboard. If you favor a lightweight switch that offers a smooth, almost effortless typing experience, the Jelly is an excellent option. Its lighter actuation force of 42 grams makes it ideal for fast typists and gamers who need quick and precise key presses without the fatigue associated with heavier switches. Additionally, the Jelly's deep, thocky sound signature adds a tactile satisfaction that many users find appealing. On the other hand, if you're looking for a more pronounced feedback with each keypress and value a quiet yet satisfying typing experience, the Gazzew U4 is the way to go. With its sharp tactile bump and plush bottom-out sensation, it delivers a more substantial feel that many typists appreciate during long sessions, while its muted sound profile ensures that you won’t disturb those around you. Ultimately, consider your typing style, whether you prefer smooth and light or tactile and substantial, and choose the switch that aligns best with your preferences.

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