HMX FJ400 vs. TTC Iron

Overview

When it comes to choosing the right mechanical keyboard switch, the HMX FJ400 and the TTC Iron offer two distinct yet enticing options for enthusiasts and everyday users alike. The HMX FJ400, known for its balanced sound profile, serves as a versatile middle ground in the HMX Film switch lineup, appealing to those who appreciate a more subdued auditory feedback during typing. In contrast, the TTC Iron distinguishes itself with a pronounced clacky sound signature that elevates the tactile experience, providing a satisfying auditory reward with each keypress. Notably, the TTC Iron is designed for effortless actuation, making it exceptionally lightweight and suitable for prolonged typing sessions without fatigue. While the FJ400 offers a more neutral experience, the Iron invites users to indulge in a joyful and precise keystroke. Each switch has its unique strengths, catering to different preferences and styles of typing. However, let's dive in a bit deeper beyond generalities so you can best decide on the perfect switch for your needs.

By the numbers

HMX FJ400 Linear

TTC Iron Linear

$3.50

$3.29 per 10

$5.40

$4.30 per 10

Learn moreLearn more

Housing materials

The housing materials of the HMX FJ400 and the TTC Iron exhibit both similarities and differences that contribute to their unique sound profiles and typing experiences. Both switches feature a POM top housing, which is renowned for its ability to create a pleasing and distinct sound. This shared characteristic results in similar auditory experiences when actuating both types of switches. Specifically, the sound profile produced is predominantly deeper and more muted, ensuring that users will enjoy a consistent acoustic signature when using either switch. This alignment in the top housing material means that the final sound produced when releasing a key will bear similar tonal qualities across both switches.

However, the bottom housing materials differ between the FJ400 and the Iron, leading to nuanced variations in their overall sound profile. The FJ400 utilizes a nylon bottom housing, recognized for its classic status in switch design. Its softer composition contributes to a deeper and fuller sound by absorbing more vibrations, which results in a duller and rounder auditory experience. In contrast, the TTC Iron employs a POM bottom housing, which shares the same material qualities as its top housing. As a result, the Iron maintains a consistent POM sound signature throughout its construction. This difference in bottom housing materials implies that while both switches may start strong with pleasing top-end sounds, the FJ400's nylon bottom delivers a unique warmth and depth that is distinct from the Iron's more uniform sound profile.

When taking into account the effects of each housing material, it becomes clear that the FJ400 and the TTC Iron, while sharing similarities in top housing, provide varied experiences in terms of bottom housing. The nylon bottom of the FJ400 enhances the lower frequencies, leading to a deeper, rounder sound on key acts, while the POM bottom of the Iron reinforces a more consistent sound across the board. If a user appreciates the muted and deep tones presented by both switches, they can expect some similarities in their sound profiles. However, those who delve deeper into their typing experience will likely notice the specific nuances each housing brings, enabling a tailored sound and tactile experience depending on their switch of choice.

Weight

When comparing the HMX FJ400 linear switch and the TTC Iron linear switch, there are notable differences in both actuation force and bottom out force. The FJ400 features an actuation force of 50 grams and a bottom out force of 58 grams, positioning it in the medium range for tactile feedback. In contrast, the TTC Iron has a lighter actuation force of 41 grams and a bottom out force of 50 grams, making it more suitable for users who prefer a less strenuous typing experience. This difference in weight can influence user comfort during extended typing sessions; those favoring lighter switches, like the Iron, may find it easier to type for longer durations without fatigue, while those who prefer more resistance might opt for the heavier FJ400 due to its more substantial feel. Consequently, the TTC Iron is the lighter switch overall, while the FJ400 is the heavier option.

Travel distance

Both the HMX FJ400 linear switch and the TTC Iron linear switch share the same travel distance of 3.8 mm, meaning that users can expect a consistent experience in terms of key feel and depth when pressing down on either switch. This equal travel distance contributes to a similar tactile response, making both switches attractive options for those who prefer linear designs. Because they have the same travel distance, switching between the two can provide a seamless experience without any noticeable difference in key travel.

Price comparison

Typing experience

When it comes to sound, the HMX FJ400 linear switch provides a balanced audio profile, making it suitable for a variety of environments due to its neutral character. This means it won't draw too much attention or distract others, which makes it a versatile option for both office and home settings. In contrast, the TTC Iron linear switch stands out with its pronounced clacky sound signature. Upon activation, this switch produces a crisp and bright sound, delivering a satisfying auditory feedback that can enhance the overall typing experience. However, while the Iron's sound is more distinct and may attract some listeners, the FJ400 offers a more subdued acoustic experience, appealing to those who prefer a quieter typing atmosphere.

In the realm of feel, the FJ400 is positioned as a moderate switch. Although its exact feel is not detailed, it would likely offer a balanced typing experience that caters to various typing styles. The TTC Iron, on the other hand, is characterized by its easy-to-press nature, requiring minimal force to actuate. This light actuation combined with a buttery smooth travel lends itself to a very comfortable typing experience, making extended sessions less fatiguing. Additionally, the Iron’s mild characteristics foster a responsive feel, making it an excellent choice for both casual users and enthusiasts looking for a pleasant tactile interaction.

In summary, while both switches offer unique qualities, the FJ400 provides a balanced approach suitable for diverse environments, whereas the TTC Iron leans towards a more engaging sound profile and a lighter, effortless typing experience. Ultimately, choosing between these switches will depend on personal preference and typing style, as those seeking a versatile and quiet experience would lean towards the FJ400, while those desiring more auditory feedback and a lighter touch might find the TTC Iron to be more appealing.

Conclusion

To conclude, the choice between the HMX FJ400 and the TTC Iron linear switches ultimately hinges on your personal typing preferences and the contexts in which you plan to use your keyboard. If you seek a balanced experience with a medium bottom-out force of 58 grams that caters to both casual and professional typing, the FJ400 is a solid option. Its neutral sound and feel make it suitable for environments where you need to maintain focus without overwhelming auditory feedback, making it ideal for office use or prolonged typing sessions. Conversely, if you prefer a light and responsive switch that enhances the joy of each keystroke, the TTC Iron with its lower 50-gram actuation force might be more appealing. This switch offers a distinct clacky sound that adds character to your typing experience, making it a great choice for gaming or when you're seeking a more engaging auditory feedback. In essence, opt for the FJ400 for a more subtle, balanced usage and choose the Iron for vibrant, lively typing moments.

Mentioned in this article

HMX FJ400 Linear

$3.50

$3.29 per 10

Learn more

TTC Iron Linear

$5.40

$4.30 per 10

Learn more