HMX Retro R Linear Switches

The HMX Retro R is a linear mechanical switch designed for users who prefer smooth keypresses with a distinct, sharp sound. It suits typists or gamers who want a clear, high-pitched click without tactile bumps. Its sound profile is louder and more pronounced compared to similar linear switches, making it less ideal for quiet environments.

Feel & Sound

• Linear design provides smooth, consistent key travel without tactile feedback.
• Produces a clacky, high-pitched, sharp, and loud sound, which stands out during typing.
• Sound profile may be distracting in shared or quiet spaces.

Actuation Characteristics

• Moderate actuation force around 45g, balancing responsiveness and fatigue.
• Pre-travel of 2.0mm offers a noticeable distance before actuation, suitable for deliberate keypresses.
• Total travel of approximately 3.5mm provides a standard depth for mechanical switches.
• Bottom-out force slightly higher than actuation force, giving a firm end to each keystroke.

Build Quality

• Top housing made of polycarbonate (PC) and bottom housing of PA66, materials known for durability and consistent sound.
• Stem constructed from POM, contributing to smooth key travel and reduced friction.
• Uses a KOS single-stage spring designed for consistent force application.
• Factory lubed to reduce initial scratchiness, improving smoothness out of the box.

Compatibility & Mounting

• 5-pin MX-style stem compatible with most MX-compatible keycaps and PCBs.
• PCB mount design requires compatible PCB or plate for installation.

Trade-offs

• Sharp, loud sound may not suit office or shared environments.
• Higher-pitched click may be fatiguing over long typing sessions for some users.
• Unknown long-term durability and modding potential beyond factory lube.

Use Cases

• Good for users who want a smooth linear feel combined with a distinct, vintage-style click sound.
• Suitable for typists and gamers who prefer audible feedback without tactile bumps.
• Less ideal for quiet office settings or users sensitive to louder key noise.