Soulcat x SPM Gravel Switch V2: HMX Linear Switches for HIFI Mechanical Keyboards

Elevate your custom keyboard build with the Soulcat x SPM Gravel Switch V2. This second-generation linear switch is manufactured by HMX, a name synonymous with precision engineering and factory-smooth performance. Designed specifically for the "HIFI" keyboard enthusiast, the Gravel V2 focuses on delivering a crisp, clean acoustic signature and a refined typing feel that eliminates scratchiness right out of the box. Whether you are a competitive gamer or a dedicated typist, these switches provide the consistency and "thock" required for a premium desktop setup.

Key Benefits

HMX Precision Manufacturing:** Produced by HMX, these switches are known for their industry-leading tolerances and high-quality factory lubrication, ensuring a buttery smooth linear stroke without the need for manual tuning.

Signature HIFI Sound Profile:** Engineered to produce a "crisp" and resonant sound, often referred to as the "voice actor" of switches, making every keystroke an auditory delight.

Premium Material Composition:** Featuring a PC (Polycarbonate) top housing for clarity, a PA66 bottom housing for structural integrity, and a POM stem for natural self-lubrication and durability.

Optimized Linear Feedback:** With a shortened total travel of 3.50mm, these switches offer a snappier, more responsive feel compared to standard 4.0mm switches, perfect for rapid-fire inputs.

Extended 20mm Spring:** The inclusion of a long 20mm spring provides a more consistent force curve and a faster, more energetic return to the home position after every press.

Key Specs

Type:** Linear Switch

Top Housing:** PC (Polycarbonate)

Bottom Housing:** PA66 (Nylon)

Stem Material:** POM

Actuation Force:** 45g ± 5g

Bottom-out Force:** 50g ± 5g

Pre-travel (Actuation Point):** 2.00mm ± 0.3mm

Total Travel:** 3.50mm ± 0.3mm

Spring Length:** 20.0mm

How to Use

These switches are compatible with MX-style mechanical keyboards. To install:

1. Ensure your keyboard is disconnected.

2. If using a hot-swap PCB, align the two metal pins of the Gravel V2 switch with the sockets on the PCB.

3. Press the switch firmly and vertically until it snaps into the plate.

4. If using a non-hot-swap board, these switches must be soldered onto the PCB.

5. Once installed, attach your preferred MX-compatible keycaps.

Care & Safety

Pin Protection:** Handle with care during installation to avoid bending the thin copper contact pins. If a pin is bent, gently straighten it with tweezers before attempting to insert it into the PCB.

Storage:** Keep switches in a cool, dry place. Excessive dust or moisture can interfere with the internal leaf spring and affect the electrical contact.

Compatibility:** Ensure your PCB supports 3-pin or 5-pin switches (as applicable) before installation.

Notes

"碎石轴 V2" represents a significant upgrade in acoustic clarity and smoothness for the modern mechanical keyboard enthusiast.