
MX Blue switches are renowned for their tactile and audible feedback, but some enthusiasts seek to enhance their deep, satisfying sound. To achieve a deeper sound profile, several modifications can be implemented. Firstly, applying switch films or pads can dampen higher-pitched frequencies, resulting in a richer, more subdued tone. Additionally, lubricating the switches with a thick, viscous grease reduces internal friction, which can mellow the sharp clicking noise. Another effective method is using heavier springs, as they alter the actuation force and contribute to a more robust, bass-heavy sound. Combining these techniques with a solid keyboard case and foam mods can further enhance the overall acoustic experience, making MX Blue switches resonate with a deeper, more immersive sound signature.
| Characteristics | Values |
|---|---|
| Switch Type | MX Blue |
| Desired Sound | Deeper, more bass-heavy click |
| Modification Methods | Lubing, Filming, Spring Swap, Housing Mods, O-rings |
| Lubing | Apply thin lubricants (e.g., Krytox 205G0) to reduce high-pitched noise |
| Filming | Add switch films (e.g., Deskeys, TX Films) to dampen sharp click sound |
| Spring Swap | Replace stock springs with heavier ones (e.g., 67g or 78g) for deeper tone |
| Housing Mods | Sand or fill housing cavities to reduce hollow sound |
| O-rings | Install O-rings on stems to soften bottom-out sound |
| Keycap Material | Use thicker PBT keycaps to enhance deeper sound |
| Stabilizer Mods | Lube or band-aid stabilizers to minimize clacking |
| Board Material | Choose a solid metal or wooden board for better sound resonance |
| Tools Required | Switch opener, lubricants, films, springs, O-rings, sandpaper |
| Difficulty Level | Intermediate to Advanced (depending on mods) |
| Cost | Varies ($10–$50 depending on mods and materials) |
| Effectiveness | High (combining multiple mods yields best results) |
| Potential Drawbacks | May alter tactile feedback or require disassembly of switches |
| Recommended for | Enthusiasts seeking a deeper, more satisfying clicky sound |
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What You'll Learn

Lubing switches for reduced high-pitched noise
The high-pitched "click" of MX Blue switches is iconic, but for some, it borders on grating. Lubrication offers a surprisingly effective solution, transforming that sharp snap into a deeper, more satisfying thock. By reducing friction between internal components, lube dampens the metallic clang, resulting in a warmer, more muted sound profile. Think of it as adding a layer of acoustic insulation to your switches.
The process involves disassembling the switch, applying a thin layer of specialized lubricant to key contact points, and reassembling with precision. While it requires patience and dexterity, the sonic payoff is significant.
Choosing the Right Lube: Not all lubricants are created equal. For MX Blues, a medium-weight grease like Tribosys 3204 or Krytox GPL 205 G0 is ideal. These lubricants provide sufficient damping without compromising the tactile feedback that makes Blues so beloved. Avoid oils, which can attract dust and degrade over time.
Application Technique: Less is more. A single drop of lube, strategically placed on the slider rails and legs, is often sufficient. Over-lubrication can lead to a mushy feel and diminished tactile bump. Use a precision applicator or a small brush for controlled application.
The Reassembly Challenge: Reassembling lubed switches requires care. Ensure all components are properly aligned, and test each switch before reinstalling it on your keyboard. A misaligned slider can result in a scratchy or inconsistent feel.
The Result: The difference is subtle yet profound. The high-pitched "click" gives way to a deeper, more rounded "thock," reminiscent of a well-tuned mechanical watch. Typing becomes a more immersive experience, with each keypress delivering a satisfying, muted feedback. Lubing MX Blues isn't just about sound modification; it's about refining the overall typing experience, making it more enjoyable and personalized.
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Using thicker keycaps to dampen sharp sounds
Thicker keycaps can significantly alter the sound profile of MX Blue switches by adding mass and dampening the sharp, high-pitched "clack" they’re known for. The principle is simple: more material absorbs more vibration, resulting in a deeper, more muted sound. Standard keycaps, typically around 1.3 to 1.5mm thick, allow the switch’s inherent noise to resonate freely. By upgrading to keycaps in the 1.5 to 2.0mm range, you introduce enough extra mass to shift the sound frequency downward, creating a fuller, more bass-heavy tone.
When selecting thicker keycaps, material choice matters. PBT (polybutylene terephthalate) is denser than ABS (acrylonitrile butadiene styrene), making it a superior option for sound dampening. For example, a 1.8mm PBT keycap will outperform a 1.6mm ABS keycap in both durability and acoustic modification. Brands like GMK and Keyreative offer high-quality PBT keycaps in various thicknesses, often marketed as "thocky" profiles, specifically designed to enhance sound depth.
Installation requires attention to detail. Thicker keycaps may not fit all keyboards due to increased height, potentially causing interference with the case or stabilizer wires. Measure your keyboard’s clearance and ensure compatibility before purchasing. Additionally, thicker keycaps can slightly alter the typing feel, adding a touch of resistance due to increased weight. This change is often welcomed by those seeking a more substantial typing experience but may require a brief adjustment period.
While thicker keycaps are effective, they’re not a standalone solution. Pairing them with other modifications, such as switch lubrication or foam inserts, can further refine the sound. For instance, applying a thin layer of dielectric grease to the switch housing complements the dampening effect of thicker keycaps, creating a smoother, more cohesive sound profile. Experimentation is key—start with keycaps and gradually add other tweaks to achieve your desired depth.
In summary, thicker keycaps are a practical, reversible way to make MX Blue switches sound deeper. By choosing denser materials like PBT and ensuring proper fitment, you can transform the sharp "clack" into a satisfying "thock." While not a complete solution on its own, this modification lays a strong foundation for further acoustic customization, offering both immediate results and room for personalization.
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Adding switch films for deeper acoustics
Switch films are thin, flexible layers placed between the stem and housing of a mechanical keyboard switch, and they can significantly alter the sound profile of MX Blue switches. By adding mass and dampening vibrations, these films reduce the high-pitched, metallic "clack" associated with Blues, resulting in a deeper, more muted acoustic signature. This modification is particularly appealing to enthusiasts who appreciate the tactile feedback of MX Blues but desire a less sharp, more resonant sound.
The process of installing switch films is straightforward but requires precision. Begin by disassembling the switch, carefully removing the keycap and stem. Clean the housing and stem to ensure optimal adhesion. Place the film inside the housing, ensuring it sits flush against the bottom. Reassemble the switch, testing for smooth operation and consistent sound. Popular film materials include polycarbonate and polyester, each offering distinct acoustic properties—polycarbonate tends to produce a warmer, deeper tone, while polyester provides a slightly brighter, yet still muted, sound.
One of the key advantages of switch films is their versatility. They can be paired with other modifications, such as lubricating the housing or using heavier springs, to further customize the sound and feel. For instance, combining films with a light coating of dielectric grease on the rails can enhance smoothness while preserving the deeper acoustic profile. However, it’s essential to avoid over-modifying, as excessive dampening can eliminate the distinctive tactile bump that makes MX Blues unique.
While switch films are effective, they are not a one-size-fits-all solution. The thickness and material of the film can dramatically impact the outcome, so experimentation is encouraged. Thicker films (e.g., 0.15mm) generally yield a more pronounced deepening effect but may require additional adjustments to maintain proper switch travel. Thinner films (e.g., 0.05mm) offer subtler changes, ideal for those seeking a minor refinement. Always test a single switch before modifying an entire keyboard to ensure the desired result.
In conclusion, adding switch films is a practical and reversible way to make MX Blue switches sound deeper. By carefully selecting materials and thicknesses, enthusiasts can achieve a customized acoustic experience without sacrificing the switch’s signature tactile feedback. Whether you’re a seasoned modder or a curious beginner, this modification offers a rewarding balance of depth and clarity, transforming the iconic "clack" into a richer, more satisfying sound.
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Applying silicone grease to stabilize sound
Silicone grease, a viscous compound often used in mechanical applications, can be a game-changer for enhancing the sound of MX Blue switches. Its primary function in this context is to dampen vibrations, thereby deepening and stabilizing the distinctive clicky sound these switches are known for. By reducing unwanted resonance, silicone grease transforms the sharp, high-pitched click into a more subdued, bass-rich tone, appealing to those seeking a richer auditory experience.
Applying silicone grease to MX Blue switches requires precision and moderation. Start by disassembling the switch, exposing the internal components. Using a non-conductive tool, such as a plastic pick or toothbrush, apply a small amount of silicone grease—roughly the size of a grain of rice—to the slider and stem. Focus on areas where friction occurs, as these are the primary sources of vibration. Avoid over-application, as excess grease can impede the switch’s tactile feedback or cause inconsistency in actuation.
The effectiveness of silicone grease lies in its ability to act as a vibration dampener without altering the switch’s mechanical properties. Unlike foam or rubber modifiers, which physically change the switch’s structure, silicone grease works at the molecular level to absorb and dissipate energy. This method preserves the switch’s signature tactile bump while refining its acoustic output, making it ideal for enthusiasts who want to enhance sound without sacrificing performance.
One common misconception is that silicone grease will completely transform MX Blue switches into a different type of switch. In reality, it refines rather than redefines. The click remains pronounced, but the higher frequencies are muted, resulting in a sound that feels fuller and more controlled. For optimal results, pair this method with other modifications, such as using heavier springs or lubricating the switch housing, to achieve a balanced and customized typing experience.
In practice, the application of silicone grease is a trial-and-error process. Experiment with different amounts and application points to find the sweet spot for your preferences. Remember, less is often more—start with minimal grease and gradually increase until the desired sound is achieved. With patience and attention to detail, this simple yet effective technique can elevate the auditory satisfaction of MX Blue switches, making each keystroke a deeper, more immersive experience.
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Modding with foam or tape for muted clicks
One of the simplest and most effective ways to deepen the sound of MX Blue switches is by modding them with foam or tape. This method works by dampening the high-pitched "clack" that these switches are notorious for, resulting in a more muted, bass-heavy sound. The principle is straightforward: add a layer of material inside the switch to absorb excess noise without compromising the tactile feedback.
Steps to Mod with Foam:
- Disassemble the switch: Carefully remove the keycap and pull out the switch from the keyboard. Separate the switch housing by gently prying it open with a tool like a switch opener.
- Insert foam: Cut a small piece of thin foam (e.g., 0.5mm thickness) to fit inside the bottom housing. Place it directly under the spring or along the walls of the housing. Ensure it doesn’t interfere with the stem’s movement.
- Reassemble and test: Put the switch back together and test it. Adjust the foam size if the switch feels scratchy or unresponsive.
Steps to Mod with Tape:
- Choose the right tape: Use thin, non-adhesive tape like Kapton tape or electrical tape. Avoid anything too thick, as it can alter the switch’s actuation.
- Apply strategically: Place a small strip of tape on the bottom housing, focusing on areas where the stem or spring makes contact. Experiment with placement to find the optimal spot for sound dampening.
- Test and refine: Reassemble the switch and test its sound and feel. Add or remove tape as needed to achieve the desired depth without sacrificing the tactile bump.
Cautions:
- Overdoing it with foam or tape can make the switch feel mushy or unresponsive. Less is often more.
- Avoid using adhesive materials that could leave residue or interfere with the switch mechanism.
- Always test one switch before modding an entire keyboard to ensure you’re satisfied with the result.
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Frequently asked questions
MX Blue switches are mechanical keyboard switches known for their tactile and audible feedback. They produce a distinct, high-pitched "click" sound due to their internal mechanism, which some users find too sharp or shallow.
You can make MX Blue switches sound deeper by using sound-dampening materials like O-rings, switch foam, or keyboard foam pads. These reduce the high-frequency "click" and enhance the deeper tones.
Yes, lubricating MX Blue switches can reduce their sharp, high-pitched click and create a smoother, deeper sound. Focus on lubricating the legs and spring to minimize friction and vibration.
Yes, using thicker or heavier keycaps, such as those made from PBT or brass, can alter the sound profile of MX Blue switches, making them sound deeper and more resonant.
Yes, DIY methods include adding switch films, using tape mods, or installing dampening rings inside the switch housing. These modifications can reduce the high-pitched click and enhance the deeper tones.

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