HMX FJ400 vs. TTC Flame Red

Overview

When it comes to choosing a mechanical keyboard switch, the HMX FJ400 and TTC Flame Red stand out as two compelling options, both categorized as linear switches but offering distinct characteristics that cater to different typing preferences. The FJ400 is celebrated for its balanced sound profile, making it an excellent middle ground in the HMX Film switch lineup, ideal for users who seek a harmonious blend of sound and performance without overwhelming noise. Conversely, the TTC Flame Red not only excels in tactile feel but also dazzles with its light diffuser, making it a top pick for gamers and typists who value aesthetic appeal alongside a smooth and weighty typing experience. While the FJ400 provides a more muted auditory experience suitable for professional settings, the Flame Red captures attention with its clacky sound and vibrant lighting, perfect for an RGB setup. However, let's dive in a bit deeper beyond generalities so you can best decide on the ideal switch for you.

By the numbers

HMX FJ400 Linear

TTC Flame Red Linear

$3.50

$3.29 per 10

$7.29

$4.38 per 10

Learn moreLearn more

Housing materials

The HMX FJ400 and the TTC Flame Red switches both utilize distinctive housing materials that play a crucial role in shaping their sound profiles, but they exhibit different characteristics due to the materials chosen for their top housing. The FJ400 employs a POM (polyoxymethylene) top housing, which is known for creating an incredibly pleasing sound that is deeper and more muted. This type of plastic lends itself to a sound that is somewhat subdued, contributing to an auditory experience that prioritizes warmth and richness. In contrast, the TTC Flame Red features a nylon top housing, which is celebrated for producing a fuller sound profile that can also be described as deeper but with a more pronounced, rounded quality. While both switches may deliver deeper sound profiles, the muted timbre of the FJ400’s POM top housing contrasts notably with the fuller resonance provided by the nylon used in the Flame Red.

When examining the bottom housings, both the FJ400 and TTC Flame Red employ nylon materials, which establishes a point of similarity between the two switches. This commonality is significant because nylon is recognized for its softer plastic properties, which absorb sound more effectively than harder plastics. As a result, switches with nylon bottom housings elicit a similarly deep and rich sound signature, characterized by a duller and rounder auditory experience. Therefore, regardless of the differing top housings, the nylon bottom housing in both switches ensures that users will enjoy comparable acoustic characteristics, particularly when typing, where the bottom housing influences the sound and feel significantly when the switch is bottomed out.

Ultimately, the combination of different materials in the top housing and the identical nylon in the bottom housing of the FJ400 and TTC Flame Red creates a unique interplay between design and sound quality. Each switch offers distinct auditory profiles due to the variances in their top housing materials, yet both maintain a certain level of consistency in the sound experience, thanks to the shared use of nylon. While the FJ400 may provide a slightly more muted experience owing to its POM top, the TTC Flame Red enhances the auditory depth with its nylon top. Thus, users can expect a rich, satisfying typing experience from both switches, albeit with nuanced differences that cater to varied preferences in sound texture and clarity.

Weight

The HMX FJ400 and TTC Flame Red linear switches exhibit notable differences in both actuation force and bottom out force. The FJ400 has a higher actuation force of 50 grams compared to the Flame Red's 45 grams, making it the heavier option in terms of initial keystroke activation. Additionally, the bottom out force of the FJ400 is also greater at 58 grams, whereas the Flame Red reaches a bottom out force of 54 grams. This means that while both switches offer a medium to medium-light typing experience, the FJ400 requires a bit more effort for both actuation and bottoming out, which may appeal to those who prefer a more substantial typing feel. Conversely, the lighter actuation and bottom out forces of the Flame Red make it a better choice for users who favor prolonged typing sessions or gaming, where less finger fatigue is desirable. Overall, the choices reflect a balance between tactile feedback and comfort, catering to different user preferences based on typing style and application.

Travel distance

The HMX FJ400 linear switch features a travel distance of 3.8 mm, while the TTC Flame Red linear switch has a slightly longer travel distance of 4 mm. This means that when pressing down on a key, the FJ400 offers a travel distance that is 0.2 mm shorter than the Flame Red. For gamers or those who favor a more responsive feel, the shorter 3.8 mm travel of the FJ400 may be more appealing, providing quicker actuation. Conversely, individuals who prefer a more pronounced feedback and a sense of depth while typing may find the 4 mm travel of the Flame Red to be more satisfying. Overall, the choice between these two switches will depend on personal preference regarding responsiveness versus depth.

Price comparison

Typing experience

The sound profile of the HMX FJ400 switch is characterized as balanced, striking a middle ground that is suitable for various environments, whether you're at home or in an office setting. It aims to provide a pleasant auditory experience without overwhelming noise, making it versatile for different users. In contrast, the TTC Flame Red switch has a neutral sound profile, which translates to a moderate actuation force and an equally moderate sound output. This enables it to cater to a broad range of preferences, fitting nicely into either casual or more focused scenarios. Both switches offer agreeable sound profiles that won't be disruptive, allowing for similar performance in terms of auditory output when paired with suitable boards and keycaps.

Feel-wise, the FJ400 is known for its smoothness, contributing to a satisfying typing experience. While specific descriptors for the FJ400’s feel aren't provided, it can be inferred that its balanced nature provides an approachable experience. On the other hand, the Flame Red switches provide a weighty smoothness alongside a mild typing experience, making them approachable for most users. Additionally, their polished finish allows for reduced friction and smooth key travel, enhancing the overall feel during extended typing sessions. Although both switches provide enjoyable tactile feedback, the Flame Red’s characteristics ensure it delivers a particularly refined touch.

In summary, both the HMX FJ400 and the TTC Flame Red linear switches offer pleasant sound and feel profiles, making them suitable for both newcomers and experienced typists alike. The FJ400's balanced sound and smooth typing experience create an inviting environment, while the Flame Red’s neutral sound and polished feel offer a versatile and refined alternative. If sound and feel are your primary concerns, either switch will provide satisfactory results, though they may cater to slightly different preferences in terms of experience.

Conclusion

To conclude, the choice between the HMX FJ400 and TTC Flame Red linear switches ultimately depends on your personal preferences and typing habits. If you prefer a slightly heavier and more balanced experience, the FJ400 is an excellent choice with its 58-gram actuation force, which provides a fulfilling sensation when bottoming out. This makes it ideal for those who appreciate a robust response while typing or gaming, and its medium sound profile suits a variety of environments, be it at home or in an office. On the other hand, if you are looking for a lighter touch and a superb visual flair for RGB setups, the Flame Red switch, with its 54-gram actuation force, is the way to go. Its smoothness and mild typing experience, complemented by a polished finish, offer a quick and enjoyable feel that many beginners and enthusiasts appreciate. Additionally, its neutral sound profile makes it versatile for different settings, providing a gentle environment for both casual typing and intensive gaming sessions. By considering your typing style and the aesthetic of your keyboard, you can make an informed choice that enhances your overall typing experience.

Mentioned in this article

HMX FJ400 Linear

$3.50

$3.29 per 10

Learn more

TTC Flame Red Linear

$7.29

$4.38 per 10

Learn more