HMX FJ400 vs. Durock Ice King Linear
An in-depth look at the HMX FJ400 and the Durock Ice King Linear switches—which one is the best fit for you?
Overview
When choosing a mechanical keyboard switch, the HMX FJ400 and the Durock Ice King Linear present two compelling options for those who prefer linear switches. The FJ400, known for its balanced sound profile, serves as a versatile choice that appeals to users seeking a middle ground between tactile feedback and smoothness, making it a great option for both typing and gaming. On the other hand, the Durock Ice King Linear stands out with its silky smooth typing experience, achieved through full nylon construction and generous factory lubrication, which enhances the overall feel and performance. While the FJ400 offers a more traditional linear experience, the Ice King Linear takes it a step further with its polished and creamy characteristics. Both switches cater to different preferences in sound and feel, but understanding their specific traits can help you make an informed choice. 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
52g
Bottom-out force
58g
Bottom-out force
62g
Pre-travel
2.00 mm
Pre-travel
2.00 mm
Total travel
3.80 mm
Total travel
3.50 mm
Factory lubed
Yes
Factory lubed
Yes
Stem construction
Standard
Stem construction
Standard
Stem material
T2
Stem material
Nylon
Top housing material
POM
Top housing material
Nylon
Bottom housing material
Nylon
Bottom housing material
Nylon
Mount type
PCB (5-pin)
Mount type
PCB (5-pin)
Spring
22mm single-stage spring
Spring
Gold-plated progressive long spring
Housing materials
When comparing the housing materials of the HMX FJ400 and the Durock Ice King Linear, it's evident that both switches leverage nylon for their bottom housing, a material celebrated for its ability to create a deep and fuller sound. As mentioned, nylon’s softness contributes to sound absorption, ultimately resulting in a rounder sound profile. This overlapping use of nylon in both the FJ400 and Ice King Linear allows for a similar auditory experience when bottoming out, as the properties of the material dampen the impact and minimize harshness. Therefore, users can expect a muted resonance whether they choose the FJ400 or the Ice King Linear when typing or gaming.
Conversely, the top housings of the FJ400 and the Ice King Linear differ significantly in terms of material, with the FJ400 utilizing POM and the Ice King Linear employing nylon. The POM top housing of the FJ400 is noted for producing an appealing sound that leans towards the deeper end of the spectrum while maintaining a muted quality. This contrasts with the Nylon top housing of the Ice King Linear, which also aims for a fuller sound profile but does so through a distinct softness that further absorbs sound, thus contributing to a rounder auditory experience. While both materials aim for a rich acoustic outcome, the nuances in their properties suggest that the FJ400 could deliver a slightly more controlled top-end sound compared to the Ice King Linear's softer, fuller response.
Ultimately, the combined effects of the differing top housing materials allow for a unique division of qualities in each switch. The perspective of tactile feedback and sound experience is nuanced by which housing has more influence during specific actions; the bottom housing plays a more significant role when bottoming out, while the top housing significantly affects key release sound. This means that while users may enjoy similar bottoming out experiences with both switches due to their common nylon bottom, the moment of release may showcase different sound profiles, allowing enthusiasts to select a switch that best aligns with their typing preferences and overall sound aesthetics.
Weight
When comparing the HMX FJ400 linear switch and the Durock Ice King Linear switch, both exhibit similar characteristics in terms of their actuation and bottom out forces, though there are slight differences. The FJ400 has an actuation force of 50 grams and a bottom out force of 58 grams, while the Ice King Linear requires a slightly heavier actuation force of 52 grams and a bottom out force of 62 grams. This means that the Ice King Linear switch is the heavier option overall, offering a more substantial typing experience that some users may prefer for its tactile feedback. In contrast, the lighter FJ400 may appeal more to those who type for extended periods or engage in prolonged gaming sessions, as the lower force can reduce fatigue. Both switches fall within a medium force range, suggesting that while they provide slightly different experiences, users can expect comparable results in terms of overall typing feel.
Travel distance
When comparing the travel distances of the HMX FJ400 linear switch and the Durock Ice King Linear switch, the FJ400 has a travel distance of 3.8 mm, while the Ice King Linear measures at 3.5 mm. This makes the Ice King Linear the shorter option, providing a more responsive feel that is often favored by gamers who seek faster key presses. In contrast, the FJ400, with its longer 3.8 mm travel distance, offers a more pronounced depth that some users may find more comfortable or satisfying to type on. Thus, if you prioritize quick response times, you may prefer the shorter Ice King Linear, but if you seek a more substantial typing experience, the longer travel of the FJ400 would be the better choice. Overall, the two switches cater to different preferences based on the balance between response speed and tactile 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 Durock Ice King Linear has an MSRP of $5.80 per 10 switches. At Milktooth, we are able to pass on savings to our customers and offer the Ice King Linear for $4.20.
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 it comes to sound, the HMX FJ400 linear switch is best categorized as having a balanced sound profile, making it a versatile option that doesn’t overwhelm the senses or fade into the background. In contrast, the Durock Ice King Linear switch features a more subdued sound, producing a dampened auditory experience with a subtle sound signature. This means while the FJ400 offers a moderate acoustic footprint, the Ice King Linear provides a quieter performance that may be preferable in shared or quieter environments. However, it's essential to note that the overall sound can still vary based on the keyboard construction and keycap materials used.
Regarding the feel of these switches, the FJ400 does not have a specific description provided, leaving its tactile qualities somewhat ambiguous. On the other hand, the Durock Ice King Linear is celebrated for its silky smoothness, which contributes to an exceptionally pleasant typing experience. With descriptors such as frictionless, creamy, and polished, the Ice King reaches a level of fluidity that minimizes resistance, allowing fingers to glide effortlessly across the keys. This combination of characteristics not only enhances comfort during extended typing sessions but also perfectly complements the tactile demands of various users.
In conclusion, while the HMX FJ400 linear switch remains a solid choice with its balanced sound profile, the Durock Ice King Linear switch excels in creating a refined and smooth typing experience with its subdued sound and superior tactile attributes. If you’re in search of a more muted and silky feel, the Ice King may indeed be your go-to. However, if you desire a more versatile sound without specific tactile characteristics, the FJ400 could still cater to your needs adequately. Each switch will provide satisfaction in different aspects, allowing you to choose based on what appeals to your unique typing preferences.
Conclusion
To wrap up, when deciding between the HMX FJ400 linear switch and the Durock Ice King Linear switch, it ultimately comes down to your personal preferences in typing experience and sound profile. If you value a balanced sound profile and a slightly lighter bottom-out force, the FJ400 is a great choice; it provides a medium actuation force of 58 grams, making it suitable for those who enjoy a more moderate feedback while typing. This switch also allows for a versatile range of use, whether you're gaming or typing up documents. On the other hand, if you're looking for an exceptionally smooth and luxurious typing experience with a bit more resistance at a 62-gram bottom-out force, the Ice King Linear will be your go-to. With its silky and frictionless feel, along with a subdued sound that minimizes distraction, this switch is perfect if you desire a refined typing experience and prefer a more premium touch. Each switch has its unique strengths, so you should choose based on what you find most comfortable and satisfying in your day-to-day usage.
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