HMX FJ400 vs. Outemu Blue
An in-depth look at the HMX FJ400 and the Outemu Blue switches—which one is the best fit for you?
Overview
When it comes to choosing a mechanical keyboard switch, the HMX FJ400 and the Outemu Blue present two distinctly different experiences tailored for varying preferences and typing styles. The HMX FJ400 is a linear switch that offers a smooth keystroke and a balanced sound profile, making it an ideal choice for those who prioritize quiet operation and swift, uninterrupted typing, whether for gaming or professional tasks. In contrast, the Outemu Blue is a clicky switch that provides both tactile feedback and an audible click, catering to users who enjoy the classic retro feel of a typewriter and appreciate the satisfying sound with each keystroke, often favored by writers and typists. While the FJ400 promotes a seamless typing experience, the Blue adds a playful element with its pronounced feedback. 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
N/A
Pre-travel
2.00 mm
Pre-travel
2.20 mm
Total travel
3.80 mm
Total travel
4.00 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
Polycarbonate
Bottom housing material
Nylon
Bottom housing material
Nylon
Mount type
PCB (5-pin)
Mount type
Plate (3-pin)
Spring
22mm single-stage spring
Spring
Stainless steel
Housing materials
The HMX FJ400 and the Outemu Blue switches exhibit notable differences in their top housing materials, which significantly influence their respective sound profiles. The FJ400 features a POM top housing, known for producing an incredibly pleasing and unique sound marked by its deeper and relatively muted characteristics. This sound profile results from POM's properties, which allow it to dampen vibrations effectively. In contrast, the Outemu Blue is equipped with a polycarbonate top housing that leads to a sharper, higher-pitched, and crisper sound profile. The stiffness of polycarbonate enhances resonance, producing a more vibrant auditory experience. While these distinct properties shape their individual sound signatures, users can also seek specific auditory characteristics based on the intended use of key switches; for instance, those prioritizing depth might lean toward the FJ400, while those desiring brightness might choose the Blue.
Both switches share a nylon bottom housing, which contributes similarly to their sound profiles by providing a deeper and fuller auditory experience. Nylon, being a softer plastic, absorbs more sound than harder alternatives, resulting in a rounder, more muted sound that complements the deeper tones produced by the top housing of both switches. This commonality ensures that while the top housings of the FJ400 and Blue diverge in sound properties, the nylon bottom housing acts as a unifying factor that mitigates the sharper sounds of the Blue and enriches the overall sound experience of the FJ400. Consequently, regardless of the differing top housing materials, both switches benefit from the round and full sound profile associated with nylon.
When evaluating the overall effectiveness of these switches, it becomes clear that the interplay of materials creates distinct sound experiences for typists and gamers alike. The FJ400’s combined POM top and nylon bottom deliver a unique sound profile that is richer and more rounded, ideal for those who appreciate depth in their keystrokes. In contrast, the Outemu Blue, with its polycarbonate top and nylon bottom, yields a brighter and sharper experience suitable for users seeking clarity and resonance, especially with the added aesthetic benefit of RGB lighting through the translucent polycarbonate. In essence, while they differ in their sound characteristics due to their top housing materials, the nylon bottom housing in both switches serves to enrich the auditory landscape, enabling users to select a switch that best aligns with their tactile and auditory preferences.
Weight
The HMX FJ400 linear switch and the Outemu Blue clicky switch offer an interesting comparison when it comes to their actuation force. Both switches require an actuation force of 50 grams, making them equal in that respect. This means typists and gamers alike can enjoy a similar experience in terms of initial key engagement, whether they prefer a lighter touch for prolonged use or a solid feel during intense sessions. However, the bottom out forces differ significantly; the FJ400 has a bottom out force of 58 grams, whereas the value for the Outemu Blue is unknown. This results in the FJ400 being the heavier option overall when fully engaged, providing a more substantial typing feel that some may prefer. In contrast, the lack of a bottom out force specification for the Outemu Blue leaves it without a direct comparison in that aspect, leaving potential users to consider their preferences for deeper key presses. Ultimately, users seeking a lighter switch experience would lean towards the FJ400 for its consistent actuation force, while those desiring a bit more heft in their typing might favor it for its noticeable bottoming out capability.
Travel distance
The HMX FJ400 linear switch has a travel distance of 3.8 mm, while the Outemu Blue clicky switch features a slightly longer travel distance of 4.0 mm. This means that when you press down on the keys, the FJ400 offers a shorter travel distance, resulting in potentially quicker response times that may appeal to gamers seeking a more responsive feel. On the other hand, the Outemu Blue's 4.0 mm travel distance provides a more traditional and tactile experience, which some users might prefer for its satisfying depth. Therefore, if you favor a lighter, more immediate key actuation, the FJ400 would be the better choice, whereas the Outemu Blue is suited for those who appreciate a more pronounced keystroke.
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 Outemu Blue comes in at $3.10 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
When it comes to sound, the HMX FJ400 linear switch is known for its balanced sound profile, which means it tends to produce a muted yet pleasing auditory experience. This characteristic allows for a more subtle typing experience compared to more pronounced switches. On the other hand, the Outemu Blue clicky switch features a distinct, sharp click that provides audible feedback with each keystroke. This click sound is often favored by typists who appreciate that audible confirmation with each action, making it a great choice for those who enjoy a more traditional typewriter-like effect. However, it’s essential to remember that the overall sound experience can be influenced by factors such as the keyboard's construction and the keycaps used.
In terms of feel, the FJ400 offers a smooth linear experience, which means there’s a consistent keystroke without any tactile bumps or interruptions. This makes it ideal for users who prefer a quieter, uninterrupted typing experience and may benefit from rapid key presses, especially during gaming. Conversely, the Outemu Blue features a tactile bump along with its clicky sound, which provides physical feedback that can enhance typing accuracy and rhythm. This bump can be advantageous for those who enjoy feeling their key presses register and can lead to a more engaging typing experience but may not suit those seeking a smooth and linear feel.
Overall, both switches cater to distinct preferences and needs. The HMX FJ400 is suitable for users who desire a balanced sound and smooth typing experience, while the Outemu Blue appeals to those who appreciate audible feedback and tactile sensation. Depending on personal preference, one could gravitate toward the FJ400 for its subtlety, or the Blue for its pronounced tactile and auditory qualities. Ultimately, your choice will depend on whether you prioritize a quiet typing experience or seek the satisfaction of tactile and audible feedback in your mechanical keyboard experience.
Conclusion
To sum up, when deciding between the HMX FJ400 linear switch and the Outemu Blue clicky switch, your choice will largely depend on your typing preferences and the kind of experience you seek from your mechanical keyboard. If you prefer a smoother, quieter typing experience with a balanced feel and medium actuation force of 58 grams, the FJ400 is an excellent choice. This switch is ideal for those who engage in long typing sessions, as it minimizes finger fatigue while maintaining a satisfying linear response without the distraction of loud clicks. On the other hand, if you enjoy auditory feedback and a more tactile typing experience, the Outemu Blue switch would be the better fit. Known for its distinct clicky sound and enhanced tactile bump, it is particularly appealing for typists who enjoy the sensation of each keystroke and want a more pronounced auditory cue to indicate actuation. Ultimately, your environment and typing habits will guide your decision: choose the FJ400 for a quieter, more fluid experience or the Blue for a lively and tactile sensation that stands out.
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