Ajazz AK820 Pro vs Yunzii B75 Pro Max
Choose the B75 Pro Max for its larger 8000mAh battery and QMK/VIA support, or the lighter AK820 Pro if lower weight and a softer flex-cut typing design matter more.
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4.6 · 256 reviews
from$68at Epomaker
No reviews
from$84at Yunzii
Which one should you get?
Get the
Ajazz AK820 Pro
Sound dampening
Build quality in the top 50% of 75% boards under $100.
- Lighter at 810g than the B75 Pro Max.
- Flex-cut PC plate and PCB are described as providing a softer, cushioned bottom-out.
- The TFT screen can show battery, time, OS, and connectivity.
- South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
Get the
Yunzii B75 Pro Max
Battery
Build quality in the top 15% of 75% boards under $100.
- The 8000mAh battery has twice the listed capacity of the AK820 Pro.
- QMK and VIA support enables key remapping, macros, profiles, RGB effects, and knob customization, according to Yunzii.
- Yunzii specifies hot-swap compatibility with 3-pin and 5-pin mechanical switches.
- South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
Choose the Yunzii B75 Pro Max if longer wireless use and QMK/VIA customization are priorities. Pick the Ajazz AK820 Pro if you want the lighter, smaller board and value its flex-cut PC plate and PCB design. Both retain a 75% layout, tri-mode connectivity, hot-swap support, a knob, and a TFT screen.
The differences that matter
Skip the 40-row spec sheet. These are the specs that change how each board feels, sounds, and fits your desk.
Ajazz AK820 Pro
Yunzii B75 Pro Max
Battery
4,000 mAh
8,000 mAh
A larger battery means fewer cables during the day
Weight
810 g
993 g
Heavier boards stay planted and lighter ones travel
QMK
No
Yes
The deep option when you want to remap every key
VIA
No
Yes
GUI remapping without compiling firmware
Sound dampening
Yes
No
- Ajazz AK820 Pro
- Yunzii B75 Pro Max
- Performance
- 6184
- Build quality
- 6680
- Productivity
- 8273
- Customizability
- 7288
- Portability
- 7990
- Layout size: 75%
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
- Switch options: Linear
- Mount style: Gasket Mount
- Knob
What will you mostly use it for?
The AK820 Pro has the edge for carrying between work locations because it is lighter and slightly smaller. The B75 Pro Max suits users who want more control over key mapping, macros, profiles, and the knob. Gaming is a close match on the listed shared features, including linear switches and N-Key Rollover. For office use, the Ajazz combines lower weight with listed Mac/Windows support and a status-focused screen.
It's a tie
- Both have linear switches, N-Key Rollover, and wired, 2.4 GHz, and Bluetooth connectivity.
- Both include a knob and a TFT screen, with no listed performance specification establishing a clear advantage for either.
Ajazz AK820 Pro vs Yunzii B75 Pro Max specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
8 of 23 specs differ
Ajazz AK820 Pro
Yunzii B75 Pro Max
Switch options
Hot-swappable
Mount style
Sound dampening
Layout size
Layout standard
Ergonomics
Knob
Display
Connection
Battery
USB-C
Case material
Plate material
Keycaps
Weight
Dimensions
Backlight
QMK
VIA
N-key rollover
Mac & Windows
Released
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Ajazz AK820 Pro vs Yunzii B75 Pro Max: your questions
The B75 Pro Max has an 8000mAh battery and QMK/VIA support, while the AK820 Pro has a 4000mAh battery and weighs less. The Ajazz also specifies a flex-cut PC plate and PCB.
The Yunzii B75 Pro Max has an 8000mAh battery, compared with 4000mAh in the Ajazz AK820 Pro. Battery capacity alone does not establish real-world runtime.
Yes. The AK820 Pro is listed at 810g, while the B75 Pro Max is 993g.
Both list Bluetooth, 2.4 GHz, and wired connectivity. Each is also described as having a knob and a TFT screen.
Yes, QMK and VIA support are listed for the B75 Pro Max. Yunzii describes using them for remapping keys, macros, profiles, RGB effects, and knob customization.
Yes, hot-swap support is listed for the AK820 Pro. The vendor description specifies compatibility with 3-pin and 5-pin mechanical switches.
Yes, the B75 Pro Max is listed as fully hot-swappable and supports 3-pin or 5-pin mechanical switches. Yunzii also describes it as shipping with pre-lubed switches.
Ajazz describes the TFT screen as showing battery status, date and time, OS, and connectivity. The vendor also lists backlight effects and customizable visuals.
Yunzii says its customizable screen can show battery level, date and time, operating system, GIFs, and photos. The product listing also specifies online website customization for the screen.
The AK820 Pro is listed at 40 x 327 x 136 mm, while the B75 Pro Max measures 42 x 334 x 144 mm. The Ajazz is also lighter, at 810g versus 993g.
Yes, both are listed as 75% ANSI keyboards. Each also has linear switches, a gasket mount, PBT keycaps, and N-Key Rollover.
The AK820 Pro lists Mac/Win support, and Yunzii describes the B75 Pro Max as supporting Windows and Mac as well as Linux and Android. Both offer wired, Bluetooth, and 2.4 GHz connections.
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