HMX Blue Topaz Linear Switches

The HMX Blue Topaz is a linear mechanical switch designed for users who prefer smooth keystrokes with reduced top-out noise. It suits typists and gamers seeking a quieter linear experience without tactile feedback. Factory lubrication and optimized housing materials aim to minimize sound while maintaining consistent keypress feel.

Feel & Sound

• Provides a smooth, linear keystroke without tactile bumps or clicks.
• Top-out sound is reduced compared to similar switches, making it quieter during release.
• Overall sound profile is similar to the Hyacinth V2 but less loud, suitable for quieter environments.

Actuation Characteristics

• Moderate operating force offers a balance between lightness and resistance, helping prevent accidental presses.
• Pre-travel and total travel distances support responsive key activation with a clear bottom-out feel.
• Bottom-out force is slightly higher than operating force, providing tactile feedback on full keypress.

Build Quality

• Top housing uses a nylon mix to contribute to sound dampening and durability.
• Polycarbonate bottom housing supports stable switch structure.
• Stem material is LY, designed for smooth movement within the housing.
• Single-stage springs from two manufacturers provide consistent force application.
• Factory lubed to reduce friction and initial scratchiness, improving smoothness out of the box.

Trade-offs

• Linear design lacks tactile feedback, which may be less suitable for users who prefer noticeable actuation points.
• While quieter than some switches, it is not silent and may still produce audible bottom-out noise.
• Unknown long-term durability and modification potential beyond factory lubrication.

Use Cases

• Good for office environments or shared spaces where quieter typing is preferred.
• Suitable for gamers who want smooth keypresses without tactile interruptions.
• Less ideal for typists who rely on tactile or clicky feedback for typing accuracy.