HMX FJ400 vs. Aflion Iceberg
An in-depth look at the HMX FJ400 and the Aflion Iceberg switches—which one is the best fit for you?
Overview
When selecting a mechanical keyboard switch, the choice between varying options is crucial to achieving the optimal typing experience. The HMX FJ400 and the Aflion Iceberg are both linear switches that cater to different preferences among users. The FJ400 stands out in the HMX Film switch lineup as a well-balanced option, delivering a pleasant sound profile that nicely balances feedback and smoothness, making it suitable for both gaming and typing tasks. On the other hand, the Aflion Iceberg, the product of a newer manufacturer, showcases an impressive smoothness and a distinctive two-stage spring design that offers a satisfying feel with every keystroke. While the Iceberg leans towards a subtler, snappy feel, the FJ400 appeals to those who prefer a more muted auditory experience. Ultimately, both switches deliver quality performance but differ in sensation and acoustic profile. 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
37g
Bottom-out force
58g
Bottom-out force
45g
Pre-travel
2.00 mm
Pre-travel
2.00 mm
Total travel
3.80 mm
Total travel
4.00 mm
Factory lubed
Yes
Factory lubed
No
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
PCB (5-pin)
Spring
22mm single-stage spring
Spring
20mm two-stage spring
Housing materials
When examining the housing materials of the HMX FJ400 and the Aflion Iceberg switches, notable differences arise, particularly in the composition of their top housings. The FJ400 utilizes POM (Polyoxymethylene), a material renowned for its ability to produce a deep and muted sound profile. The POM top housing gives the FJ400 a unique auditory characteristic that some users might find more pleasing for certain typing experiences. In contrast, the Iceberg switches feature a polycarbonate top housing that produces a sharper, higher-pitched sound. This difference stems from polycarbonate's inherent stiffness, which not only delivers a crisper sound but also enhances acoustic resonance. Consequently, while the FJ400's POM top enhances a subdued audio experience, the Iceberg's polycarbonate top seeks to offer brightness and clarity.
However, both switches utilize nylon for their bottom housings, leading to interesting commonalities in sound profile. The nylon material is well-regarded in the keyboard community for its ability to absorb sound, resulting in a deeper and fuller auditory experience regardless of the specific model. With both the FJ400 and Iceberg sharing this bottom housing characteristic, players can expect a consistent low-frequency performance that dulls sharper sounds from the keystroke impact. Thus, while the top materials diverge in sound quality—POM prioritizing depth and polycarbonate favoring clarity—this shared nylon bottom housing helps tie both switches together in terms of producing a rich and balanced bottom-out sound.
Ultimately, the divergent qualities of the top housing do create distinct audio profiles, but the synergy of the nylon bottom housing in both switches allows for a foundation of deep sound. When typing on either the FJ400 or the Iceberg, users will therefore experience a combination of the unique effects of each top housing material tempered by the consistent characteristics provided by their nylon bottoms. This interplay ensures that while the overall sound and feel may differ when a key is released or engaged, both switches possess a certain level of acoustic depth that binds their experiences together. Thus, despite the differences at the top, the nylon material unifies the overall auditory experience across both models.
Weight
When comparing the HMX FJ400 linear switch to the Aflion Iceberg linear switch, there are notable differences in both actuation and bottom out forces. The FJ400 features an actuation force of 50 grams and a bottom out force of 58 grams, which categorizes it as a medium switch, appealing to those who prefer a more substantial typing experience. In contrast, the Iceberg boasts a lighter actuation force of 37 grams and a bottom out force of 45 grams, making it ideal for users who favor a softer touch, allowing for longer typing sessions with less strain. Therefore, the Iceberg is the lighter option, while the FJ400 is the heavier switch. Ultimately, these differences highlight the range available in switch designs, catering to diverse preferences in typing feel and responsiveness.
Travel distance
The HMX FJ400 linear switch has a travel distance of 3.8 mm, while the Aflion Iceberg linear switch features a slightly longer travel distance of 4 mm. This means that the FJ400 provides a more responsive feel, which is ideal for gamers looking for quick key presses, as the shorter travel distance allows for faster actuation. On the other hand, the Iceberg’s 4 mm travel distance offers a more substantial depth, which some users may find more satisfying and less abrupt during use. In this comparison, the FJ400 is the shorter option, and if you prefer a more responsive gaming experience, it would be the better choice. Conversely, if you enjoy a more pronounced keypress feel, the Iceberg may suit you better. Ultimately, your preference will dictate which switch aligns with your typing or gaming style.
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 Aflion Iceberg has an MSRP of $3.50 per 10 switches. At Milktooth, we are able to pass on savings to our customers and offer the Iceberg for $3.07.
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 comparing the sound profiles of the HMX FJ400 and Aflion Iceberg linear switches, the FJ400 is noted for its balanced sound, which likely provides a moderate auditory experience, making it versatile for various settings. In contrast, the Iceberg features a clacky and high-pitched sound, delivering a sharper, crisper, and more percussive auditory feedback. This makes the Iceberg more prominent in shared environments, while the FJ400’s sound may be perceived as more muted and subtle. Overall, if you prefer a richer sound experience, the Iceberg switches might suit your taste better, but the FJ400 offers ample balance for less intrusive typing.
In terms of feel, the FJ400 is not explicitly described in the information provided. However, the Iceberg boasts a snappy, feathery, and subtle feel. The use of a two-stage spring in the Iceberg provides a responsive experience, making each key press feel lively and engaging. Additionally, the feathery quality allows for reduced finger fatigue, ideal for prolonged use, while the subtle aspect contributes to a light resistance without overwhelming feedback. If the FJ400 were to provide a similar level of comfortable feedback and response, it would likely make for an enjoyable typing experience as well, but the specifics remain unknown.
In conclusion, both the HMX FJ400 and the Aflion Iceberg linear switches offer distinct subjective qualities. The Iceberg excels in producing a vibrant sound and pleasing tactile experience that caters to those who enjoy a more pronounced typing interaction, while the FJ400’s balanced profile may appeal more to users seeking a less obtrusive experience. Without specific descriptions for the FJ400's sound and feel, it remains a bit of a mystery, but it could still deliver a satisfying experience if it aligns with the described qualities. Ultimately, your choice may depend on whether you prioritize a lively auditory feedback or a more muted, balanced approach.
Conclusion
To conclude, your choice between the HMX FJ400 and the Aflion Iceberg linear switches ultimately hinges on your personal preferences and usage scenarios. If you prefer a medium actuation force that strikes a balance between comfort and feedback, the FJ400 is an excellent option. Its sound profile is designed to be satisfying without being overwhelming, making it suitable for a variety of environments, whether you're typing away at the office or gaming at home. Moreover, the FJ400 caters well to those who enjoy a more grounded typing experience, where the tactile feedback feels significant yet not too heavy. On the other hand, if you seek a lighter touch with a snappy response and less fatigue during extended typing sessions, the Iceberg switch is tailored for you. With its lower actuation force and crisp, high-pitched sound, the Iceberg offers a more lively typing experience that can make fast-paced gaming or prolonged work feel effortless. Therefore, consider the context in which you'll be using your keyboard: for a balanced, all-around switch, go with the FJ400; if you want something that feels light and responsive, the Iceberg is where you should direct your attention.
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