HMX FJ400 vs. Gateron Milky Red Pro (KS-3)
An in-depth look at the HMX FJ400 and the Gateron Milky Red Pro (KS-3) switches—which one is the best fit for you?
Overview
When it comes to choosing a mechanical keyboard switch, the HMX FJ400 and the Gateron Milky Red Pro (KS-3) both stand out as compelling linear options, yet each offers a unique experience for typists and gamers alike. The HMX FJ400 is celebrated for its balanced sound profile, positioning itself as a versatile choice that caters to those who appreciate a harmonious blend of feedback without being overly loud or intrusive. In contrast, the Gateron Milky Red Pro shines in its smoothness and affordability, often favored by users looking for a buttery keystroke experience complemented by a satisfying low-pitched “thock.” While both switches provide a linear typing experience devoid of tactile bumps, they cater to different preferences: the FJ400 might appeal to those who seek a more neutral sound, whereas the Milky Red Pro's pronounced acoustic signature can enhance the tactile enjoyment of typing. However, let’s dive in a bit deeper beyond generalities so you can best decide on the ideal switch for your needs.
By the numbers
Technical specifications
Actuation force
50g
Actuation force
45g
Bottom-out force
58g
Bottom-out force
52g
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 comparing the housing materials of the HMX FJ400 and the Gateron Milky Red Pro (KS-3), it's evident that both switches utilize nylon for their bottom housing, which contributes significantly to their acoustic properties. The FJ400 features a POM top housing, which is inherently different from the nylon used in the Milky Red Pro. POM, or polyoxymethylene, is known for its rigidity and durability, offering a distinct sound profile characterized as deeper and more muted. In contrast, the Milky Red Pro utilizes nylon for both its top and bottom housings, resulting in a fuller and rounder sound due to the soft nature of the material, which inherently absorbs more sound during typing.
Despite the different top housing materials, the overall sound and feel of the switches share similarities due to the use of nylon in the bottom housing for both models. This commonality adds depth and fullness to the sound profile, ensuring that both switches deliver a satisfying auditory experience. The softness of nylon as a material is responsible for this quality, allowing both the FJ400's and Milky Red Pro's bottom housings to produce a duller sound that resonates through each keystroke. Therefore, while the top housings present distinct acoustic characteristics, the outcome of typing on both switches may still yield a comparable auditory sensation influenced by the nylon found in their bottom constructions.
Ultimately, the interaction between the top and bottom housing materials plays a crucial role in determining the switches' sound profiles and tactile experiences. The FJ400's POM top housing offers a unique signature sound that contrasts with the nylon top of the Milky Red Pro. However, because both switches share identical bottom housing materials, the resulting depth and fullness in sound will be present in both. The nuanced differences created by the housing materials allow for distinct typing experiences while ensuring a solid foundation rooted in the benefits of nylon, bridging the gap in sound profiles and tactile feedback across both switch types.
Weight
When comparing the actuation and bottom out forces of the HMX FJ400 linear switch to the Gateron Milky Red Pro (KS-3) linear switch, we find notable differences that cater to distinct user preferences. The FJ400 has an actuation force of 50 grams and a bottom out force of 58 grams, making it relatively heavier and providing a more pronounced tactile response during typing. In contrast, the Milky Red Pro (KS-3) is lighter with an actuation force of 45 grams and a bottom out force of 52 grams. This difference in weight means that the FJ400 may be preferable for those who enjoy a sturdier feel and tactile feedback, while the Milky Red Pro is better suited for users who favor a lighter touch for extended typing or gaming sessions. Ultimately, these variations in actuation and bottom out forces will significantly influence the typing experience, making it essential for users to choose a switch that aligns with their preferences for typing dynamics.
Travel distance
The travel distance of the HMX FJ400 linear switch is 3.8 mm, while the Gateron Milky Red Pro (KS-3) linear switch has a slightly longer travel distance of 4.0 mm. This means that the FJ400 switch provides a shorter stroke compared to the Milky Red Pro, which is more traditional in its design. For gamers seeking quicker response times, the HMX FJ400 would likely be the preferred choice due to its reduced travel distance, facilitating faster key presses. However, for users who appreciate a more substantial feel when typing, the Gateron Milky Red Pro offers a deeper travel that may enhance the experience of keystrokes. Ultimately, your choice will hinge on your personal preference for either a snappier response or 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 Red Pro (KS-3) has an MSRP of $2.61 per 10 switches. At Milktooth, we are able to pass on savings to our customers and offer the Milky Red 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 HMX FJ400 linear switch is known for its balanced sound profile, which ensures a moderate auditory experience that doesn't overpower or distract. It strikes a middle ground, allowing for a pleasant keypress sound without being too pronounced or subdued. In contrast, the Gateron Milky Red Pro (KS-3) leans towards a richer auditory experience. Users describe it as having a “thocky” sound, characterized by deep, thudding tones that resonate well during key presses. This switch produces a bassy and low-pitched sound, making it popular for those who appreciate a more robust acoustic profile. The sound produced by both switches can vary depending on other factors, such as keycaps and keyboard construction, but overall, the FJ400 offers a balanced approach, while the Milky Red Pro provides a deeper auditory richness that many enthusiasts enjoy.
Regarding feel, the FJ400 switch has yet to be subjectively described, leaving some uncertainty about its unique typing experience. On the other hand, the Gateron Milky Red Pro (KS-3) is celebrated for its buttery feel, allowing for a remarkably smooth and fluid keystroke experience. This sensation is often perceived as seamless and uniform, making it particularly appealing for users who prioritize a high level of comfort and ease during long typing sessions. While the lacking descriptive detail on the FJ400 means its feel remains to be evaluated, the buttery nature of the Milky Red Pro is a definite highlight for those who prefer smooth transitions between key presses.
In summary, the HMX FJ400 and Gateron Milky Red Pro (KS-3) linear switches cater to different preferences when it comes to sound and feel. The FJ400 offers a balanced sound profile, promoting a moderate auditory experience that doesn’t distract, while the Milky Red Pro delivers a rich, deep “thock” sound that many find satisfying. When it comes to feel, the FJ400 lacks detailed subjective feedback, making it difficult to assess fully, whereas the Milky Red Pro provides a buttery smooth typing experience. Ultimately, both switches have their strengths, so personal preference will play a significant role in deciding the right fit for your mechanical keyboard setup.
Conclusion
In conclusion, the choice between the HMX FJ400 linear switch and the Gateron Milky Red Pro (KS-3) linear switch ultimately depends on your personal preferences and intended use. If you favor a medium bottom-out force, you might gravitate towards the FJ400, which strikes a balance in the HMX Film switch lineup, delivering a well-rounded sound profile, making it suitable for both typing and gaming without being overly taxing on your fingers. On the other hand, if you prioritize a smoother typing experience with less resistance and appreciate a softer touch, the Milky Red Pro (KS-3) is an excellent option. Its lower bottom-out force exudes a buttery smoothness that many users find appealing, especially for long typing sessions. Furthermore, the thocky and bassy sound profile of the Milky Red Pro can enhance the overall typing experience, rewarding you with satisfying auditory feedback. Therefore, when deciding between these two switches, think about your comfort preferences, sound enjoyment, and whether you lean towards a firmer typing feel or a softer, more effortless stroke.
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