A4tech Bloody S520N Fire Black - BLMS Red Plus Switch Gaming Mechanical Keyboard

Bloody S520N is a high-speed mechanical gaming keyboard designed for players who want maximum responsiveness, durability and customisation. The model uses BLMS Red Plus mechanical switches, offers 1 ms response, hot-swappable switches, RGB backlighting and a full-size layout, which makes it an excellent choice for fast-paced games and everyday work.

Key features

BLMS Red Plus Mechanical Switch

• A linear, fast and quiet mechanical switch.
• Specially tuned actuation point for higher speed and precision.
• Suitable for FPS, MOBA and quick reactions.

1 ms Key Response

• Technology Ahead Quick Step provides 1 ms reaction time and instant transmission of commands.
• The real feel of a professional e‑sports keyboard.

Hot‑Swappable design

• Supports 3‑pin and 5‑pin mechanical switches.
• Allows easy replacement or customisation of the press feel.

RGB backlighting

• 10 preset RGB effects.
• Control via FN combinations — no software needed.

 N‑Key Rollover + Anti‑Ghosting

• Ensures every keypress is registered accurately, even with multiple simultaneous keys.

Double‑Shot Injection Keycaps

• Two-layer keycaps resistant to wear and fading.
• Variants: Fire Black, Icy White, Pudding Black.

4MB built-in memory

• Stores profiles and settings directly in the keyboard.

 Mix & Match Keycaps

• Included an additional 9 black keycaps for customisation.