HMX FJ400 vs. KTT Purple Click
An in-depth look at the HMX FJ400 and the KTT Purple Click switches—which one is the best fit for you?
Overview
When it comes to choosing the right mechanical keyboard switch for your typing or gaming experience, the differences between switches can significantly impact your overall satisfaction. The HMX FJ400, a linear switch, stands out as a balanced option in the HMX Film switch lineup, boasting a moderate sound profile that caters to those seeking a quieter yet responsive keystroke. This switch is ideal for users who prioritize smooth key presses and an uninterrupted typing experience, making it perfect for both gaming and office use. In contrast, the KTT Purple Click, also known as the Purple Sauce switch, brings a lively character to the table with its distinct high-pitched click that provides an invigorating auditory feedback. With a light keystroke and pronounced tactility that strikes a harmonious balance, this switch appeals to typists who appreciate the satisfying "click" that accompanies their every stroke. While the FJ400 offers a more subdued typing experience, the Purple Click delivers an exciting and resonant engagement. 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
40g
Bottom-out force
58g
Bottom-out force
55g
Pre-travel
2.00 mm
Pre-travel
1.90 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
18mm spring
Housing materials
When comparing the housing materials of the HMX FJ400 and the KTT Purple Click, notable differences emerge in their top housings. The FJ400 features a POM (Polyoxymethylene) top housing, which is known for producing a deeper, more muted sound profile that adds a unique quality to typing experiences. In contrast, the Purple Click is equipped with a polycarbonate top housing, which yields a sharper and crisper sound due to polycarbonate's inherent stiffness. This difference in materials reflects in the overall auditory experience, with users preferring the FJ400 for a softer, more subdued sound or the Purple Click for its bright and clear tonal characteristics that are especially pronounced when used with RGB lighting due to polycarbonate's translucency.
When we turn our attention to the bottom housing of both switches, we find similarities that bridge their sound profiles. Both the FJ400 and the Purple Click utilize nylon for their bottom housings, which is a traditional choice that delivers a deeper and fuller auditory experience. Despite the contrasting sounds produced by their top housings, the nylon bottom housing serves to unify their acoustic properties, as nylon absorbs more sound and results in a rounder tone that can help mitigate the sharper notes from the top housing of the Purple Click. As a result, while users may notice distinct differences in the high end of the Purple Click’s sound profile versus the deeper tone of the FJ400, the commonality in the bottom housing ensures that both switches still deliver a satisfying tactile and auditory response.
In summary, the comparison between the HMX FJ400 and KTT Purple Click highlights how different materials influence the way each switch ultimately sounds and feels during use. The POM and polycarbonate top housings create polar opposite sound profiles, allowing the FJ400 to produce a more muted sound while the Purple Click delivers a crisper note. However, the shared nylon bottom housing plays a crucial role in moderating sound characteristics across the two switches. This means that while there may be distinct experiences at the top end, users can anticipate a similar foundational feel and acoustic warmth when bottoming out on both switches, effectively providing a bridge that connects their unique sound signatures.
Weight
When comparing the actuation and bottom out forces of the HMX FJ400 linear switch and the KTT Purple Click clicky switch, we find some notable differences. The HMX FJ400 requires a heavier actuation force of 50 grams compared to the lighter 40 grams needed for the Purple Click switch. This implies that users who prefer a more substantial feel when typing might lean towards the FJ400. However, the bottom out force of the FJ400 is slightly higher at 58 grams in contrast to the Purple Click's 55 grams, which still supports the idea that the FJ400 provides a stronger typing experience overall. While both switches fall within the medium to medium-light ranges, the FJ400's slightly heavier forces may contribute to a more tactile feedback, while the Purple Click offers a gentler touch ideal for longer typing sessions or casual gaming. Ultimately, the choice between these switches will depend on personal preference regarding weight and feedback.
Travel distance
When comparing the travel distances of the HMX FJ400 linear switch and the KTT Purple Click clicky switch, a notable difference emerges. The FJ400 boasts a travel distance of 3.8 mm, while the Purple Click extends to 4 mm, making it the longer option between the two. This slight difference in travel distance can impact the typing experience significantly. If you are in search of faster response times preferred by many gamers, the shorter travel distance of the FJ400 may be more appealing. On the other hand, the Purple Click's longer travel distance can provide a more substantial feel for those who appreciate a deeper, more tactile experience when typing. Thus, selecting between these two switches largely depends on individual preferences for responsiveness versus 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 KTT Purple Click has an MSRP of $3.00 per 10 switches. At Milktooth, we are able to pass on savings to our customers and offer the Purple Click for $2.55.
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, providing an overall subtle auditory experience during typing. It doesn’t produce excessive noise, making it suitable for environments where quiet operation is preferred. On the other hand, the KTT Purple Click switch is characterized by its resonant, higher-pitched sound. This switch creates a clean and crisp auditory experience with a satisfying click on each keystroke, adding a layer of excitement to typing. The dramatic distinction in their sound profiles appeals to different user preferences—those who favor a quieter experience versus those who appreciate an engaging, clicky sound.
When it comes to feel, the FJ400 is designed to provide a smooth and linear keystroke experience, promoting fluidity without tactile interruptions. This allows for an uninterrupted typing rhythm, ideal for users who enjoy fast-paced input. In contrast, the Purple Click offers a more invigorating typing experience with pronounced feedback, allowing users to feel each keystroke as they type. Its moderate to firm actuation force and stepped tactile feel deliver an immersive sensation, making it more engaging for those who appreciate tactile switches. This contrast in feel highlights a fundamental difference in user interaction with the keyboard—smoothness versus a textural experience.
Overall, the HMX FJ400 linear switch and KTT Purple Click switch cater to distinct preferences in both sound and feel. The FJ400 suits users looking for a balanced, quieter typing experience, whereas the Purple Click appeals to those who crave the stimulation of tactile feedback and an engaging sound profile. Ultimately, the choice between these switches will depend on personal preference and the specific typing experience one seeks.
Conclusion
To conclude, choosing between the HMX FJ400 linear switch and the KTT Purple Click clicky switch ultimately comes down to your personal preferences in sound and typing feel. If you favor a balanced sound profile and a medium bottom-out force that is neither too heavy nor too light, the FJ400 is an excellent choice. It's designed for those who appreciate a smooth and consistent keystroke without any distractions, making it ideal for long typing sessions where comfort and subtlety are paramount. On the other hand, if you desire a more engaging typing experience with a satisfying click, the KTT Purple Click might be the switch for you. Its lighter actuation and invigorating tactile feedback create a lively atmosphere, perfect for those who enjoy the auditory and tactile responses that come from each stroke. The higher-pitched resonance adds an exciting dimension to your typing, making it great for casual gaming or typing enthusiasts who thrive on interactivity. In summary, your choice will depend on whether you lean towards a straightforward, linear experience with the FJ400 or you prefer the lively, clicky feedback of the Purple Click. Each switch offers its own unique advantages that cater to different typing styles, so consider what feels right for you in terms of both sound and sensation.
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