HMX SU vs. TTC Yunhai
An in-depth look at the HMX SU and the TTC Yunhai switches—which one is the best fit for you?
Overview
When it comes to mechanical keyboard switches, the HMX SU and the TTC Yunhai both stand out as excellent linear options, yet they cater to slightly different preferences in typing experience. The HMX SU features a robust PA12 housing and a T5 stem, delivering a subtle yet relatively deep sound profile that lends a solid typing feel, making it an ideal choice for users who appreciate a balanced blend of tactile feedback and auditory satisfaction. In contrast, the TTC Yunhai switches are designed for those who favor an incredibly light actuation force combined with a unique deep, rounded sound profile, offering a 'feathery' touch that feels almost effortless for typists who prioritize comfort and ease during extended use. Both switches have their merits—while the HMX SU provides a more pronounced feedback ideal for typing accuracy, the Yunhai excels in delivering a smooth and gentle keystroke experience. 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
42g
Bottom-out force
50g
Bottom-out force
50g
Pre-travel
1.80 mm
Pre-travel
1.50 mm
Total travel
3.60 mm
Total travel
3.60 mm
Factory lubed
Yes
Factory lubed
Yes
Stem construction
Standard
Stem construction
Standard
Stem material
T5
Stem material
POK
Top housing material
Nylon
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
23mm single-stage spring
Housing materials
The HMX SU and the TTC Yunhai switches utilize identical materials for both their top and bottom housings, with both constructed from nylon. This commonality means that users can expect a similar auditory experience when typing on either switch. The use of nylon, described as a classic switch housing material, manifests in a deeper and fuller sound profile during usage. This characteristic stems from nylon's inherent properties as a softer plastic, allowing it to absorb more sound compared to harder plastics. As a result, both the HMX SU and TTC Yunhai switches generate a duller and rounder sound, which is appealing to many typists seeking a satisfying acoustic feedback in their keystrokes.
Examining the function of the top and bottom housings, we notice that the distribution of sound and feel is influenced primarily by the housing configuration. Since the HMX SU and TTC Yunhai share the same nylon material for both top and bottom housings, their individual contributions to the typing experience become harmonious. The bottom housing is critical during the bottom-out phase, imparting a solid and impactful sound and feel when a key is pressed down completely. Conversely, the top housing predominantly influences the sound generated when a key is released. Because both switch types employ nylon for both housings, the overall typing experience retains a consistent auditory profile, regardless of which switch one chooses.
Ultimately, the choice between the HMX SU and TTC Yunhai switches may come down to personal preference or branding rather than material differences. Since the nylon construction and its acoustic properties remain constant, users can expect similar results in terms of sound and feel across both switch options. The shared material characteristics contribute to an enjoyable typing experience, ensuring that both switches appeal to enthusiasts looking for softer, more subdued sound profiles in their keyboards. Thus, whether one opts for the SU or the Yunhai, the end result will likely yield a comparable performance, characterized by the rich auditory feedback that nylon inherently provides.
Weight
When comparing the HMX SU linear switch and the TTC Yunhai linear switch, both exhibit light actuation and bottom out forces, appealing to users who prefer softer keystrokes for extended typing or gaming sessions. The HMX SU has an actuation force of 45 grams and a bottom out force of 50 grams, whereas the TTC Yunhai features a slightly lighter actuation force of 42 grams, also with a bottom out force of 50 grams. This positioning makes the Yunhai the lighter option when it comes to actuation force, providing an even gentler push for users seeking a more effortless typing experience. However, both switches share an identical bottom out force, meaning they require the same amount of pressure to bottom out, providing consistent feedback in that regard. Ultimately, while both switches cater to those who appreciate lighter forces, the Yunhai holds an edge in actuation, making it a more appealing choice for enthusiasts who prioritize minimal resistance during use.
Travel distance
The HMX SU linear switch and the TTC Yunhai linear switch both share the same travel distance of 3.6 mm, meaning that users will experience a consistent keypress depth regardless of which switch they choose. This equal travel distance ensures that both switches provide a similar typing feel, offering a unified experience in responsiveness and actuation force. As a result, users can expect the same tactile feedback and overall performance when using either switch. In essence, neither switch is shorter or longer; instead, they deliver an identical travel distance, leading to comparable results in terms of typing experience.
Price comparison
Which switch is more bang for your buck?
The HMX SU has an MSRP of $3.50 per 10 switches. At Milktooth, we are able to pass on savings to our customers and offer the SU for $3.29.
The TTC Yunhai has an MSRP of $7.50 per 10 switches. At Milktooth, we are able to pass on savings to our customers and offer the Yunhai for $5.99.
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 SU linear switch features a subtle yet relatively deep sound profile, which provides a pleasing auditory experience that is not overly pronounced. This can create a more understated atmosphere, making it suitable for environments where noise levels are a concern. In contrast, the TTC Yunhai linear switch offers a deep, rounded sound profile that adds a layer of richness to the typing experience. Its unique sound signature may appeal to those who prefer a more satisfying auditory feedback while typing. It is important to note that sound can also be influenced by the choice of keyboard, board material, and keycap profile, so both switches may yield different results based on individual setups.
Regarding the feel, the HMX SU linear switch provides a smooth actuation but details about its specific characteristics are not explicitly described. Conversely, the TTC Yunhai linear switch is characterized by a feathery feel, which is remarkably light and requires minimal exertion from the fingers. This quality makes the Yunhai an excellent choice for long typing sessions, as it significantly reduces finger fatigue and strain, creating a comfortable experience for typists. Even though the SU's feel isn't specifically detailed, a smooth linear switch generally allows for a similar typing experience, albeit potentially less effortless than the Yunhai's feathery touch.
In conclusion, both the HMX SU and TTC Yunhai linear switches offer unique sound and feel characteristics tailored to different preferences. While the SU provides a more subdued and deep sound, the Yunhai stands out with its rich auditory feedback and exceptionally light actuation force that promotes comfort. Ultimately, if you're drawn to a smoother experience with a more solid sound, the SU could be your switch of choice. However, if you favor an effortless typing experience with distinct auditory qualities, the Yunhai is likely to be more suitable. Each option will satisfy different typists, so personal preference and typing style should guide your choice.
Conclusion
To conclude, when choosing between the HMX SU linear switch and the TTC Yunhai linear switch, you should consider your typing preferences and intended use. If you're looking for a switch that balances a subtle yet deeper sound profile with a good overall feel, the HMX SU may be the better choice. Its PA12 housing combined with a T5 stem provides a satisfying yet relatively muted acoustic experience that some users might find more appealing for professional environments or when precision and intentional keystrokes are paramount. On the other hand, if you're after the lightest typing experience possible, the TTC Yunhai switch is an excellent option. Described as having a feathery feel, it requires minimal effort to press and therefore minimizes finger fatigue, making it ideal for prolonged typing sessions, whether for gaming, studying, or office work. Ultimately, your decision should align with whether you prioritize a richer sound and tactile experience or an exceptionally light and effortless feel.
Mentioned in this article
