KeyBench / all 946 keyboards / A4Tech Bloody B820
A4Tech Bloody B820
A4Tech Bloody B820 is a Full size Optical keyboard built around Bloody Light Strike LK Blue switches for a clicky feel. Its spec sheet reads wired only, tray mount, ABS keycaps, Per-key RGB, 1000 g case, released 2019. KeyBench scores it 50 out of 100 across speed, build, features and value.
$105
Estimated typical street price in US dollars, not launch MSRP. Prices on this site are checked against retailer listings and move; confirm before you buy.
Scores
Ranked 582 of 946 overall, and 38 of 44 among Optical boards in the database.
- Overall
- 50
- Speed
- 50
- Build
- 62
- Features
- 36
- Value
- 52
Specifications
- Switch type
- Optical · Bloody Light Strike LK Blue
- Feel
- Clicky
- Layout
- Full size
- Connection
- Wired
- Polling rate
- 1000 Hz
- Rapid trigger
- No
- Hot-swap
- No
- Mount
- Tray mount
- Keycaps
- ABS
- Weight
- 1000 g
- Battery
- No battery (wired)
- Backlight
- Per-key RGB
- Rotary knob
- No
- Released
- 2019
RGB showcaseStrong softwareBudget
How its switch registers
A4Tech Bloody B820 ships with Bloody Light Strike LK Blue, rated clicky by this database. A flag on the stem falls into a light gap and breaks the beam between an LED and a sensor. Linear and very consistent, because there is no debounce wait after the break.
Drawn distances are the norm for this switch family, not a measurement of this keyboard. The animation is the same diagram the app uses.
Sound
On the sound model used across this site it reads as clacky · crispy. That is a character derived from its mount, case weight, switch feel and noise rating — it is not a recording of this keyboard.
Play the typing sample and see the full sound breakdown in the app.
Where to look
No manufacturer page is recorded for this model, so this site does not link one. The app lists live retailer searches for the region you are browsing from instead.
Buying links, live prices in your currency and photo status · compare it in the app