PromoType Key Boy Advance 50 KBA50

The PromoType Key Boy Advance 50 KBA50 is a 50% keyboard kit designed for hobbyists who want a compact, customizable build. It suits users comfortable with assembling their keyboard and choosing between soldered or hot-swappable PCBs. Its multiple connectivity options, including wired and wireless tri-mode, make it adaptable for varied setups. This board is good if you want a small footprint and flexible spacebar layouts but may be less ideal if you prefer a fully prebuilt or simpler keyboard.

Key Features

• Supports soldered or hot-swap PCBs, allowing easy switch changes without soldering if preferred.
• Tri-mode connectivity (wired, Bluetooth, 2.4GHz wireless) available on select PCB versions, offering versatile connection options.
• Two spacebar layout options, including a split spacebar, provide typing customization for different preferences.
• Includes a 1000mAh battery for wireless use, enabling portability without constant power connection.

Build Quality

• Available in aluminum or polycarbonate cases, balancing durability and weight.
• Uses top or oring top mount, which affects typing feel by cushioning keypresses through rubber or gasket elements.
• Comes with a carrying case and accessories like LED boards and diffuser, supporting a clean, assembled build.
• Weight around 1.4 kg for aluminum, providing a stable typing surface.

Typing Experience

• Mounting style and included porons (soft foam) help reduce noise and vibration for a quieter typing session.
• Supports VIAL firmware, allowing extensive key remapping and macro programming for personalized layouts.

Connectivity

• Wired connection via USB-C ensures reliable, low-latency use.
• Wireless tri-mode option adds flexibility for users who want a clutter-free desk or mobile use.
• Battery life and wireless performance details are unknown.

Trade-offs

• Requires assembly and soldering skills if choosing the solder-only PCB, which may not suit beginners.
• Wireless features only available on specific PCB versions, limiting options if you want all features combined.
• Lacks prebuilt option, so users must source switches and keycaps separately.