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HMX FJ400 vs. Gateron Ink Yellow

An in-depth look at the HMX FJ400 and the Gateron Ink Yellow switches—which one is the best fit for you?

Overview

When it comes to the realm of mechanical keyboards, the choice of switch can significantly influence your typing experience and overall satisfaction. The HMX FJ400, a linear switch, is heralded for its balanced sound profile and serves as a middle ground within the HMX Film switch lineup, making it an appealing option for users seeking a harmonious combination of sound and feel. On the other hand, the Gateron Ink Yellow also falls into the linear category but is characterized by its shorter travel distance, appealing to those who desire a typing experience that bridges the gap between a laptop's feel and that of a traditional mechanical keyboard. While the Ink Yellow is known for its smoothness and slightly clacky sound, the FJ400 offers a more muted auditory presence that might be preferred in quieter environments. Both switches have their unique benefits, and the choice largely hinges on personal preference — whether you prioritize a balanced acoustic profile or a rapid, laptop-like feedback. 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

60g

Bottom-out force

58g

Bottom-out force

67g

Pre-travel

2.00 mm

Pre-travel

1.50 mm

Total travel

3.80 mm

Total travel

3.50 mm

Factory lubed

Yes

Factory lubed

Yes

Stem construction

Standard

Stem construction

Partial box

Stem material

T2

Stem material

POM

Top housing material

POM

Top housing material

Proprietary INK blend

Bottom housing material

Nylon

Bottom housing material

Proprietary INK blend

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 Gateron Ink Yellow switches contribute significantly to their respective sound profiles and overall typing experiences. The FJ400 features a POM (Polyoxymethylene) top housing, which creates a deeper, more muted sound profile described as “unique” and “pleasing.” This contrasts with the Ink Yellow, whose top housing utilizes a proprietary INK blend that produces a pointed, high-pitched sound, often referred to as "clacky." While both switches utilize different materials for their top housing, their distinctive sound characteristics indicate that switching between them could yield varied auditory experiences while typing.

When examining the bottom housing, the FJ400 is built with nylon, a classic and softer plastic, which contributes to a deeper, fuller sound. This softness helps to absorb sound, leading to a more rounded audio profile. In contrast, the Ink Yellow employs the same proprietary INK blend for its bottom housing as it does for its top, which aligns with its higher-pitched clacky sound. Consequently, each switch diverges in its approach; the FJ400's nylon bottom enhances the depth of sound, while the Ink Yellow's INK blend maintains high-pitched characteristics, contributing to a more aggressive, brighter typing experience.

Despite the differences, the interplay between the two types of housing in each switch ensures that users still experience a rich auditory feedback during typing. In switches where the top and bottom materials differ, the effect of each housing becomes more pronounced; for example, the muted FJ400 top would mellow the impact of the nylon bottom, while the Ink Yellow’s higher-pitched INK blend would amplify the clackiness due to the synergy between the materials. Ultimately, while the sound profiles and tactile feedback exhibit distinct signatures due to their contrasting materials, both switches can cater to users seeking varied auditory experiences, influenced by the unique qualities of their respective housings.

Weight

When comparing the HMX FJ400 linear switch and the Gateron Ink Yellow linear switch, notable differences in actuation force and bottom out force become evident. The FJ400 features an actuation force of 50 grams and a bottom out force of 58 grams, categorizing it as a medium switch, which is ideal for users seeking a balance between comfort and feedback during typing or gaming. In contrast, the Ink Yellow switch has a stronger actuation force of 60 grams and a bottom out force of 67 grams, placing it in the medium-heavy category. This additional force may provide a more substantial and satisfying typing experience for those who prefer a heavier switch. As a result, the FJ400 is the lighter option, making it suitable for prolonged use without excessive fatigue, while the Ink Yellow is the heavier switch, appealing to users who appreciate a firmer push feel. Overall, those preferring lighter switches could opt for the FJ400 for greater ease during lengthy sessions, while the Ink Yellow would cater to those who favor enhanced tactile feedback.

Travel distance

When comparing the travel distances of the HMX FJ400 linear switch and the Gateron Ink Yellow linear switch, it's evident that the FJ400 offers a longer travel distance of 3.8 mm, while the Ink Yellow has a travel distance of 3.5 mm. This difference of 0.3 mm can impact the typing experience; those who favor quick responsiveness, like gamers, may prefer the shorter Ink Yellow switch for its quicker actuation. Conversely, the deeper 3.8 mm travel of the FJ400 may appeal to users who appreciate a more pronounced keypress, making it feel less abrupt and more substantial during typing. Thus, if you prioritize a responsive feel, the Gateron Ink Yellow would be the better choice, whereas the HMX FJ400 might be more suited for those who value depth in their keystrokes.

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 Gateron Ink Yellow has an MSRP of $7.50 per 10 switches. At Milktooth, we are able to pass on savings to our customers and offer the Ink Yellow for $7.35.

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 it comes to sound, the HMX FJ400 linear switch provides a balanced sound profile, making it versatile for various environments, whether at home or in the office. This middle-ground characteristic allows it to deliver a pleasing auditory experience without being too intrusive. In contrast, the Gateron Ink Yellow switch offers a unique combination of neutrality and clackiness. It produces a crisp and bright sound, particularly highlighted by its clacky quality that makes each keystroke feel more pronounced. This sharp and percussive sound can add an enjoyable element to typing, making it great for users who appreciate auditory feedback in their typing experience.

In terms of feel, the FJ400 maintains a balanced approach that caters to a wide range of preferences, although specifics about its tactile feedback are not provided. On the other hand, the Ink Yellow switch presents a mild and polished feel, which offers a gentle typing experience and a smooth key travel that enhances overall comfort. The polished nature indicates that this switch has been refined, likely through quality materials or lubrication, resulting in reduced friction. Users of the Ink Yellow can expect a smooth and luxurious tactile experience, making typing feel effortless.

In summary, while both the HMX FJ400 and Gateron Ink Yellow linear switches aim to provide enjoyable typing experiences, they cater to slightly different auditory and tactile preferences. The FJ400 strikes a balanced sound profile and an overall approachable feel, making it suitable for diverse environments and users. Conversely, the Ink Yellow attracts those who appreciate a sharp, clacky sound and a refined sensation under their fingers. Both switches ensure satisfying results for different types of users: if you're after a versatile sound, the FJ400 is a great choice, while the Ink Yellow excels in delivering a smooth and enjoyable typing experience.

Conclusion

To sum up, the choice between the HMX FJ400 linear switch and the Gateron Ink Yellow linear switch ultimately hinges on your personal preferences and typing style. If you are someone who prefers a balanced and slightly lighter touch, the FJ400 is an excellent option with its medium bottom-out force of 58 grams. This switch also offers a well-rounded sound profile that caters to both beginner and advanced users alike. It’s versatile enough for various settings, whether you're working from home or gaming. On the other hand, if you enjoy a heavier feel and a slightly more tactile experience, then the Gateron Ink Yellow, with its medium-heavy force of 67 grams, might be the better choice. Its shorter travel distance and polished finish provide a smooth, refined typing experience, while the pronounced clackiness makes it a joy for users who appreciate auditory feedback. In conclusion, consider what aspects of typing and sound are most important to you—whether it's the balance and versatility of the FJ400 or the satisfying clack and smoothness of the Ink Yellow—and let that guide your decision.

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