HMX Retro C Linear Switches

This linear switch suits users who want a smooth keystroke with a pronounced, clacky sound. It fits those looking for a distinctive auditory experience, such as typists or enthusiasts who prefer louder, high-pitched feedback. It is less ideal for quiet office environments or users seeking tactile or clicky feedback.

Feel & Sound

• The switch offers a smooth, linear keystroke without tactile bumps or clicks.
• Its sound profile is clacky, high-pitched, rich, and loud due to fiberglass in the bottom housing, which accentuates the noise.
• Bottom-out feel is firm but not harsh, supporting clear feedback on keypress completion.

Actuation Characteristics

• Pre-travel of 2.0mm provides moderate distance before actuation, balancing speed and control.
• Total travel around 3.5mm allows full key depression typical of mechanical switches.
• Operating force near 45g offers a medium resistance, suitable for users who want neither too light nor too heavy keys.

Build Quality

• Top housing made of polycarbonate and bottom housing of PA66 with fiberglass enhances sound and durability.
• Stem constructed from POM contributes to smooth keystrokes and reduced friction.
• Single-stage KOS spring provides consistent force throughout key travel.
• Factory lubed, which reduces initial scratchiness, though further lubing may improve smoothness.

Compatibility & Use Cases

• 5-pin PCB mount MX-style design fits most standard mechanical keyboards with compatible sockets.
• Good for users who prioritize sound and smoothness over quiet operation.
• Less suited for office settings or users sensitive to loud key noise.

Trade-offs

• The loud, high-pitched sound may be distracting in shared or quiet spaces.
• Fiberglass bottom housing enhances clack but may increase perceived harshness for some.
• Unknown long-term durability and modding potential beyond factory lube.