HMX x Purple Dawn Linear Switches

This linear switch suits users who want a smooth keystroke with a distinctive sound profile that balances muted and thocky notes. It fits typists or gamers who prefer a clean bottom-out feel without excessive noise. The switch offers durability improvements over typical UPE stems and includes factory lubrication for smoother operation.

Feel & Sound

• Very smooth keystroke with no tactile bump, supporting fast and consistent key presses.
• Bottom-out is clean and solid, providing satisfying feedback without harshness.
• Sound profile combines a subtle top-out with a vibrant, thocky bottom-out, creating a poppy but not loud typing experience.
• Modified UPE stem material reduces noise compared to standard UPE, making it less intrusive in shared spaces.

Actuation Characteristics

• Operating force around 55g offers moderate resistance, balancing speed and control.
• Pre-travel of 2.0mm allows for responsive actuation without feeling too sensitive.
• Total travel near 3.9mm provides a full keypress depth common in many mechanical switches.
• Bottom-out force is slightly higher than actuation force, contributing to a solid end-press feel.

Build Quality

• Top housing made from PA12 material, known for smoothness and a pleasant top-out sound.
• Bottom housing uses P4 plastic, which adds a thocky and clacky character to the sound.
• Stem is a strengthened, modified UPE to improve durability over standard UPE, reducing risk of breakage.
• Spring is a 22mm KOS single-stage extended design, supporting consistent force throughout travel.
• Factory lubed with a mix of GPL105 and GPL205 on key friction points, enhancing smoothness and reducing scratchiness.

Trade-offs

• Linear design means no tactile feedback, which may be less satisfying for users who prefer bumps or clicks.
• Sound profile is more pronounced than fully silent switches, so it may not suit very quiet environments.
• Unknown compatibility details such as hot-swap friendliness or LED support.