The HMX Cthulhu Switch is a modern, premium linear switch specifically designed for enthusiasts seeking a particularly loud, bright, and "clacky" sound profile. Unlike many current switches that aim for a deep, "thocky" sound profile, the Cthulhu deliberately focuses on a sharp, resonant sound with high presence. This is achieved by the special material combination of a high-fiberglass P7 bottom housing and a reinforced POM stem, which together enable a very direct, crisp, and surprisingly smooth actuation. This makes the switch particularly suitable for builds where sound character and acoustic feedback are paramount – less for quiet office setups, and more for expressive custom keyboards.

Technical Specifications:

• Model: HMX Cthulhu
• Type: Linear (no tactile feedback)
• Actuation Force: approx. 45–50 gf (variant dependent)
• Bottom-Out Force: approx. 50–56 gf
• Pre-Travel: approx. 2.0 mm
• Total Travel: approx. 3.5 mm
• Stem: M1 POM (reinforced)
• Top Housing: Polycarbonate (PC)
• Bottom Housing: P7 (Nylon with high glass fiber content)
• Spring: 22 mm Single-Stage
• Pins: 5-Pin (PCB-Mount)
• Lubrication: Factory Lubed (incl. Stem & Spring)
• Sound Profile: Very clacky, bright, resonant
• Special Features: High-precision molding, distinct sound focus, very low friction

Compared to other HMX switches – such as the Electric Wave – the Cthulhu is much more focused on maximum sound presence. While many modern linear switches try to achieve a balanced ratio between sound and smoothness, the Cthulhu clearly positions itself as a "Clack King." It delivers a sharper, higher-frequency sound profile and a very direct typing feel, while still remaining surprisingly smooth, typical of HMX. This makes it particularly interesting for users who want to create a striking, acoustically dominant keyboard build.