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HMX FJ400 vs. Outemu Brown

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

Overview

When considering mechanical keyboard switches, the HMX FJ400 and the Outemu Brown provide distinct experiences tailored to different user preferences. The FJ400, categorized as a linear switch, is renowned for its smooth actuation without tactile bumps, making it an ideal choice for gamers who prioritize rapid key presses and a balanced sound profile for quieter typing experiences. In contrast, the Outemu Brown is a tactile switch that delivers a notable feedback mechanism with each keystroke, appealing to typists who appreciate the satisfying sensation of knowing their command has registered without needing to bottom out the key. While the FJ400 offers a streamlined, uninterrupted typing experience perfect for fast-paced gaming, the Brown’s tactile bump can enhance accuracy and comfort during long typing sessions. However, let's dive in a bit deeper beyond generalities so you can best decide on the best switch for you.

By the numbers

Technical specifications

Actuation force

50g

Actuation force

53g

Bottom-out force

58g

Bottom-out force

65g

Pre-travel

2.00 mm

Pre-travel

1.20 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

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 Brown switches utilize different materials for their top housings, which significantly influences their auditory characteristics. The FJ400 boasts a POM (Polyoxymethylene) top housing, renowned for producing an incredibly pleasing yet muted sound profile. This material tends to generate deeper tones that emphasize a rounded auditory experience. In contrast, the Outemu Brown features a polycarbonate top housing, which is stiffer and allows for a sharper, higher-pitched sound. This difference is profound; while the FJ400 may provide a more subdued typing experience, the Outemu Brown’s polycarbonate construction delivers clarity and resonance, ideal for users who enjoy a more articulate sound when typing.

Interestingly, both the FJ400 and Brown models employ nylon for their bottom housings, resulting in similar sound profiles concerning the low-end auditory characteristics. Nylon being a softer plastic absorbs sound and contributes a deeper, fuller tone to the overall typing experience. This shared material means that while the top housing influences sound clarity, the nylon bottom on both switches enhances the warmth and depth of the sound. Consequently, users can expect a satisfying typing feedback from both switches, as the qualities of nylon play a significant role in the auditory experience even when paired with differing top housing materials.

While the top materials set the tone for how each switch sounds during key releases, the nylon bottoms unify their performance by providing a consistent base experience. If one were to use the FJ400 with its POM top and the Outemu Brown with its polycarbonate top, the differences would become more apparent when pressing down on the keys, with the bottoming out feeling similar thanks to the nylon’s characteristics. Ultimately, although the switches showcase distinct sound profiles due to their top housings, the combined influence of their nylon bottoms results in a surprisingly cohesive auditory foundation that emphasizes deeper sounds when typing, regardless of the top material utilized.

Weight

When comparing the HMX FJ400 linear switch and the Outemu Brown tactile switch, the actuation and bottom out forces reveal key differences that cater to varying preferences among users. The HMX FJ400 requires a lighter actuation force of 50 grams compared to the Outemu Brown's 53 grams, making the former more suitable for users who favor lighter switches for extended typing sessions. Additionally, the bottom out force for the FJ400 is at 58 grams, while the Brown reaches a heavier 65 grams, contributing to a more substantial typing experience. This contrast indicates that while both switches offer medium to medium-heavy resistance, those seeking a lighter feel would likely prefer the FJ400, and those who appreciate a firmer push should opt for the Outemu Brown. Thus, if you are looking for a lighter switch for comfort during prolonged use, the FJ400 is the better choice; conversely, for a more pronounced feel, the Brown would be the preferable option.

Travel distance

When comparing the travel distance of the HMX FJ400 linear switch and the Outemu Brown tactile switch, we see a clear distinction between the two. The FJ400 has a travel distance of 3.8 mm, while the Outemu Brown features a slightly longer travel distance of 4 mm. This means that the Brown switch offers a more traditional, deeper keypress, making it ideal for users who enjoy a substantial tactile experience. In contrast, the FJ400's shorter travel distance might appeal to those who prefer quicker response times, such as gamers, who often favor faster actuation for improved performance. Thus, if you're looking for a switch that provides a more responsive feel, the FJ400 would be the better choice, while the Outemu Brown would be suitable for those who appreciate a more pronounced travel 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 Outemu Brown 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

The HMX FJ400 linear switch features a balanced sound profile that sits comfortably in the middle of the HMX Film switch lineup, making it suitable for those who prefer a quieter typing experience without completely sacrificing auditory feedback. Meanwhile, the Outemu Brown tactile switch is renowned for its distinct sound, which is characterized by a subtle “click” that provides a satisfying auditory cue each time the switch is actuated. Both switches will produce sound differently depending on the keyboard build, choice of keycaps, and overall environment, but the FJ400 leans towards a more muted quality, while the Brown delivers more pronounced auditory feedback during use.

When it comes to feel, the FJ400 is noted for its smooth actuation, providing a fluid typing experience that is devoid of tactile bumps, which is typical for linear switches. This characteristic allows for fast and uninterrupted key presses, making it appealing for gamers and typists who prioritize speed. In contrast, the Outemu Brown offers a tactile feel with a noticeable bump at the actuation point. This tactile feedback can help users feel when their keystrokes register, which may enhance typing accuracy and provide a more engaging experience for those who appreciate noticeable feedback while typing.

In summary, while the HMX FJ400 linear switch provides a smoother and quieter typing experience with its balanced sound and smooth feel, the Outemu Brown tactile switch stands out with its distinctive sound and tactile feedback that caters to users who enjoy a more interactive typing sensation. Depending on your preferences—whether you lean towards a quieter, smoother operation or a more pronounced tactile response—both switches can deliver a satisfying typing experience tailored to different user needs.

Conclusion

To conclude, the choice between the HMX FJ400 linear switch and the Outemu Brown tactile switch ultimately depends on your personal preferences and typing needs. If you prefer a smooth and silent experience without the tactile bump, the FJ400 is an excellent choice, especially given its balanced sound profile and moderate bottom out force of 58 grams that caters to a wide range of users. This switch could be ideal for those who type frequently or require a quieter environment, such as in an office setting. Conversely, if you enjoy feedback in your typing experience, the Outemu Brown switch’s tactile bump will provide a satisfying sensation with its medium-heavy bottom out force of 65 grams. This switch is particularly suitable for typists who appreciate the tactile feedback to enhance their typing rhythm or for gamers who like to have a clearer sense of actuation. By understanding these nuances, you can make a more informed decision that aligns with your preferences and enhances your overall keyboard experience.

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