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HMX Gravel vs. TTC Iron

An in-depth look at the HMX Gravel and the TTC Iron switches—which one is the best fit for you?

Overview

When choosing a mechanical keyboard switch, the HMX Gravel and TTC Iron both stand out as exceptional linear options, each offering unique characteristics that cater to different preferences. The HMX Gravel is celebrated for its exceptional smoothness and refined typing feel, providing users with a responsive and effortless experience thanks to its medium-light actuation force. This makes the Gravel ideal for those who prioritize a fluid, comfortable typing experience without the burden of heavy key presses. In contrast, the TTC Iron offers a distinctive clacky sound signature, providing an auditory satisfaction that enhances the tactile feedback of each keystroke. With its remarkably light actuation and buttery smooth travel, the Iron appeals to users who seek both precision and pleasure in their typing sessions. While both switches promise a delightful typing experience, their differences render them suitable for varying preferences and use cases. 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

45g

Actuation force

41g

Bottom-out force

50g

Bottom-out force

50g

Pre-travel

2.00 mm

Pre-travel

1.40 mm

Total travel

3.50 mm

Total travel

3.80 mm

Factory lubed

Yes

Factory lubed

Yes

Stem construction

Standard

Stem construction

Partial box

Stem material

POM

Stem material

POM

Top housing material

Polycarbonate

Top housing material

POM

Bottom housing material

Nylon

Bottom housing material

POM

Mount type

PCB (5-pin)

Mount type

Plate (3-pin)

Spring

22mm single-stage spring

Spring

22mm single-stage spring

Housing materials

When comparing the housing materials of the HMX Gravel and the TTC Iron switches, it becomes evident that both switches utilize distinct materials for their top housings, leading to differing acoustic characteristics. The Gravel employs a polycarbonate top housing, which is known for producing a sharper, higher-pitched, and crisper sound profile. This quality results from the stiffness of polycarbonate, allowing for clearer resonance, particularly when RGB lighting is used. In contrast, the TTC Iron features a POM top housing, which lends itself to creating a deeper and more muted sound. The fundamental disparity between the two materials means that capturing similar auditory results with both switches would not be straightforward; rather, each has a unique sound signature stemming from its inherent material properties.

On the other hand, both switches utilize nylon and POM for the bottom housing, respectively. The Gravel's nylon bottom housing is characterized by its ability to absorb sound due to its softer nature, which results in a deeper and fuller sound profile. Similarly, the Iron uses a POM bottom housing that is also noted for its deep and muted sound. While both switches may deliver rich audio experiences, the nylon in the Gravel provides a slightly rounder and warmer sound compared to the POM in the Iron—which offers a uniquely pleasing tonal quality. Achieving a similar auditory experience between these two bottom housings could prove elusive, as their sound absorption properties contribute distinctly to how each switch feels and sounds during use.

In sum, while the Gravel and Iron both utilize materials that influence sound and tactile feedback, the materials differ between the top and bottom housings, ultimately shaping each switch’s unique character. The polycarbonate of the Gravel’s top housing yields a clearer sound while the POM provides a richer resonance. Meanwhile, the nylon in the Gravel's bottom housing serves to complement the clarity from the top, while the POM in the Iron creates a consistent but different foundation for its sound. Therefore, the overall experience of pressing these switches will be distinctly influenced by the interplay of materials, leading to unique sound profiles and tactile sensations that are not easily replicated across the two products.

Weight

The HMX Gravel linear switch and the TTC Iron linear switch both have light actuation and bottom out forces, making them suitable options for those who prefer a softer typing feel. The Gravel features an actuation force of 45 grams and a bottom out force of 50 grams, while the Iron has a slightly lighter actuation force of 41 grams but matches the Gravel with a bottom out force of 50 grams. This similarity in bottom out force indicates that both switches will provide the same resistance when pressing all the way down. However, the Iron is the lighter of the two, which may appeal to those looking for a switch that allows for longer typing sessions with less fatigue, while the Gravel, being slightly heavier at the actuation point, might provide a more substantial typing experience for users who prefer a firmer feel. Overall, both switches are excellent choices, depending on personal preference for actuation force.

Travel distance

When comparing the travel distances of the HMX Gravel linear switch and the TTC Iron linear switch, it is evident that the Gravel provides a shorter travel distance of 3.5 mm, while the Iron has a slightly longer travel distance of 3.8 mm. This difference, though modest, can significantly affect the typing experience. For those who prefer quicker response times, the Gravel switch may be more appealing due to its shorter travel distance, aligning with the trend of shorter travel switches favored by gamers. On the other hand, the Iron switch, with its longer travel distance, could be more suitable for users who appreciate a deeper feel when pressing down on keys, potentially offering a more tactile and fulfilling experience. In summary, the HMX Gravel offers a shorter travel distance, promoting rapid key presses, whereas the TTC Iron presents a longer distance, catering to those who enjoy a more substantial key press sensation.

Price comparison

Which switch is more bang for your buck?

The HMX Gravel has an MSRP of $3.50 per 10 switches. At Milktooth, we are able to pass on savings to our customers and offer the Gravel for $2.99.

The TTC Iron has an MSRP of $5.40 per 10 switches. At Milktooth, we are able to pass on savings to our customers and offer the Iron for $4.30.

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 Gravel linear switch remains somewhat undefined, while the TTC Iron linear switch is characterized by its pronounced clacky sound signature. This clackiness produces a sharp, crisp sound with each keypress, creating a lively auditory experience that many users find satisfying. The Iron's sound can be described as bright and percussive, making it an engaging option for those who appreciate an audible response from their switches. The Gravel’s relatively neutral sound profile may offer a more subdued typing experience, making it less intrusive for shared spaces compared to the more resonant Iron.

In terms of feel, the HMX Gravel switch is renowned for its exceptional smoothness and responsive actuation, making it a perfect choice for enthusiasts who value a fluid typing experience. The medium-light actuation force contributes to an effortless typing feel, allowing for less finger fatigue during extended use. Meanwhile, the TTC Iron switch also prides itself on an easy-to-press nature with a light actuation force that facilitates quick and comfortable typing. Its buttery smooth travel enhances the overall typing experience, providing a mild and gentle resistance that appeals to a broad range of users, thus ensuring a pleasant interaction on both switches.

In summary, while both the HMX Gravel and TTC Iron linear switches offer distinct qualities, they cater to different user preferences. The Gravel provides an incredibly smooth and lighter typing feel with less emphasis on sound, making it suitable for environments where noise could be a concern. In contrast, the Iron excels in auditory feedback with its clacky sound profile, while also providing a comfortable typing experience. Each switch has attributes that are favorable depending on individual needs—whether you prefer the subdued elegance of the Gravel or the lively engagement of the Iron, both switches promise a gratifying typing journey.

Conclusion

To conclude, your choice between the HMX Gravel linear switch and the TTC Iron linear switch hinges on your typing preferences and what you value most in your mechanical keyboard experience. If you are drawn to an exceptionally smooth feel and effortless actuation during your typing sessions, the Gravel switch is likely the better fit. Its lighter bottom-out force and refined texture make it ideal for those long typing hours or intense gaming sessions where you want a fluid experience without feeling weighed down. On the other hand, if you appreciate a bit of auditory feedback along with a similarly light actuation, the TTC Iron might suit you better. Its clacky sound adds a layer of enjoyment that enhances the typing experience, making each press feel engaging and satisfying. Moreover, the Iron's buttery smooth travel and mild resistive feel offer a comfortable option for both beginners and seasoned typists who desire a versatile switch. Ultimately, your decision will rely on whether you prioritize a seamless tactile experience or appreciate a sound signature that elevates your typing enjoyment.

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