HMX FJ400 vs. Gateron Milky Yellow Pro (KS-3)
An in-depth look at the HMX FJ400 and the Gateron Milky Yellow Pro (KS-3) switches—which one is the best fit for you?
Overview
When it comes to choosing the right mechanical keyboard switches, the HMX FJ400 and the Gateron Milky Yellow Pro (KS-3) present two compelling options, each with its distinct appeal. The FJ400, positioned as a middle ground in the HMX Film switch lineup, is well-regarded for its balanced sound profile, offering a smooth keystroke that caters to both typists and gamers alike. In contrast, the Gateron Milky Yellow Pro embodies the essence of a classic budget switch, celebrated for its buttery smoothness and satisfying thocky sound. This all-rounder excels in providing a tactile experience, making it a favorite among budget-conscious enthusiasts looking for quality and performance. Both switches offer unique benefits: the FJ400 for its versatility in sound and feel, and the Milky Yellow Pro for its robust build and appeal. 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
50g
Bottom-out force
58g
Bottom-out force
62g
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
Nylon
Bottom housing material
Nylon
Bottom housing material
Nylon
Mount type
PCB (5-pin)
Mount type
PCB (5-pin)
Spring
22mm single-stage spring
Spring
Stainless steel
Housing materials
When examining the housing materials of the HMX FJ400 and the Gateron Milky Yellow Pro (KS-3), it is essential to note both the similarities and differences that these switch designs possess. The FJ400 utilizes a POM plastic for its top housing, which is known for creating a unique sound profile that is deeper and more muted. In contrast, the Milky Yellow Pro employs a nylon top housing, a classic material in the mechanical switch world, which is similarly adept at producing a deeper sound but tends to offer a fuller resonance due to its softer nature. Despite their different materials, both switches are designed to provide a pleasing auditory experience, indicating that if paired correctly, users might find a comparable sound quality and typing experience.
Both the FJ400 and the Milky Yellow Pro feature nylon as their material of choice for the bottom housing, emphasizing a crucial similarity between these two switches. This shared use of nylon contributes significantly to the overall sound profile of the switches, as it absorbs more sound than harder plastics, yielding a duller and rounder auditory experience. Consequently, regardless of the differing top housing materials, the bottom housings of both switches align closely, leading to a comparable typing experience in terms of sound when the key is bottomed out. This combination underscores the importance of the bottom housing in influencing how the switches sound during use.
While the FJ400 and the Gateron Milky Yellow Pro do exhibit similarities in their nylon bottom housings, their differing top housing materials do reflect distinct sound qualities. The POM top of the FJ400 may contribute to a more muted sound profile when releasing the key, whereas the nylon top of the Milky Yellow Pro might offer a slightly more resonant experience. The unique traits of each material can create subtle variations in feel and sound feedback, suggesting that while users may find overlap in auditory results, the overall switch experience will still differ due to the interaction of the top and bottom housing materials. Ultimately, enthusiasts of mechanical keyboards may appreciate both switches for their respective auditory properties and tactile responses, even as they recognize the nuanced distinctions brought about by their differing materials.
Weight
When comparing the actuation and bottom out forces of the HMX FJ400 linear switch and the Gateron Milky Yellow Pro (KS-3) linear switch, we find that both switches share the same actuation force of 50 grams. This similarity means that users will experience comparable keystroke triggering, making both switches suitable for long typing sessions and gaming without significant fatigue. However, the bottom out forces differ between the two: the FJ400 has a bottom out force of 58 grams, while the Milky Yellow Pro (KS-3) has a slightly heavier bottom out force of 62 grams. As a result, the FJ400 is the lighter switch, providing a softer feel when bottoming out, whereas the KS-3 offers a more substantial typing experience due to its heavier bottom out force. Therefore, those who prefer a lighter touch for comfort may gravitate towards the FJ400, while those seeking a firmer response might prefer the Milky Yellow Pro (KS-3).
Travel distance
The HMX FJ400 linear switch has a travel distance of 3.8 mm, while the Gateron Milky Yellow Pro (KS-3) has a slightly longer travel distance of 4 mm. This makes the FJ400 the shorter option, offering a more responsive feel that might appeal to gamers or those who favor quick keypresses. In contrast, the Milky Yellow Pro (KS-3) provides that extra depth, which some users might appreciate for a more satisfying typing experience. While both switches are categorized as linear and likely deliver smooth operation, the difference in travel distance may influence their suitability depending on user preferences—be it a desire for rapid actuation or a preference for a more tactile depth.
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 Milky Yellow Pro (KS-3) has an MSRP of $2.33 per 10 switches. At Milktooth, we are able to pass on savings to our customers and offer the Milky Yellow Pro (KS-3) for $2.30.
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
In terms of sound, the FJ400 is known for offering a balanced auditory profile, putting it in a versatile space suitable for various preferences. In contrast, the Gateron Milky Yellow Pro (KS-3) produces a notably bassy and low-pitched sound, characterized by a deep thocky tone upon key presses. This rich auditory experience is often favored by enthusiasts who appreciate a satisfying thud-like sensation, making the Milky Yellow Pro a great choice for users seeking an engaging soundscape while typing or gaming. However, it is essential to note that the sound produced by either switch can also be influenced by the keyboard frame and the keycaps used.
When considering feel, the FJ400 offers a nuanced experience that is appealing to many, but specific characteristics were not outlined. In comparison, the Gateron Milky Yellow Pro (KS-3) excels in delivering a buttery feel that ensures a smooth and fluid keystroke experience, promoting effortless typing. This switch’s textured response may present a delightful sensation for some users, enhancing the overall typing experience with its uniformity and ease. While both switches can provide a satisfying feel, the Milky Yellow Pro is distinctly recognized for its seamless action, which many typists and gamers might prefer.
Overall, both the HMX FJ400 and Gateron Milky Yellow Pro (KS-3) linear switches have their unique qualities, with the FJ400 likely offering a balanced sound and an undefined feel, while the Milky Yellow Pro stands out with its rich, thocky sound and buttery smooth feel. Those looking for a versatile option may find the FJ400 appealing, while users who desire a more resonant auditory and tactile experience might gravitate toward the Milky Yellow Pro for its satisfying characteristics. In any case, your choice may ultimately align with your specific preferences, as both switches can provide rewarding experiences depending on your setup and typing style.
Conclusion
To conclude, choosing between the HMX FJ400 and the Gateron Milky Yellow Pro (KS-3) hinges on your personal preferences and usage scenarios. If you are looking for a well-balanced switch that offers a slightly softer sound profile and a medium actuation force of 58 grams, the FJ400 might be your choice. It caters well to those who prefer a more neutral experience without overwhelming sound, which could benefit typists or gamers who desire a slightly quieter environment while still maintaining a pleasant keystroke feel. On the other hand, if you prioritize a "thocky" sound with deeper bass tones and a more pronounced resistance feel at 62 grams, the Milky Yellow Pro stands out as a fantastic choice. Its buttery smooth keystrokes and textured feedback make it ideal not only for enthusiasts who appreciate a tactile experience but also for those who engage in extended gaming sessions, where that satisfying sound profile can enhance immersion. Ultimately, it comes down to whether you prefer a more subdued, balanced experience or a richer, more tactile one, so consider your typing habits and aesthetic preferences before making your selection.
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