Ajazz AK820 Pro vs Epomaker TH4075% vs 40% Layout Showdown
Choose the Ajazz AK820 Pro for a ready-to-use layout with a screen, or the Epomaker TH40 for extreme portability and deep VIA programmability.
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4.6 (256)4.6 · 256 reviews
from$55at Epomaker
90-day lowLowest price in 90 days
3.9 (56)3.9 · 56 reviews
from$55at Epomaker
90-day lowLowest price in 90 days
Which one should you get?
Get the
Ajazz AK820 Pro
75%
Build quality in the bottom 50% of 75% boards under $100.
- Includes a 0.85-inch TFT screen for customizable system info and visuals.
- 75% layout offers a practical balance of compact size and dedicated arrow/function keys.
- Larger 4000mAh battery for extended wireless use.
- South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
- No numpad.
Get the
Epomaker TH40
40% Layout Showdown
Build quality in the top 30% of 40% boards under $150.
- Ultra-compact 40% layout with split spacebar maximizes desk space and portability.
- Fully programmable via VIA software with QMK support for deep customization.
- Vendor description lists specific sound-dampening materials: Poron plate foam, IXPE switch pad, and bottom Poron foam.
- South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
- Compact layout only. No function row, dedicated arrow keys, or numpad.
Your priority should be layout. If you want a keyboard that works immediately with a familiar key arrangement and bonus features like a screen, the Ajazz AK820 Pro is the sensible choice. If you are willing to learn layers and value the smallest possible footprint paired with extensive VIA programmability for a tailored experience, the Epomaker TH40 is the board to get. Consider the TH40's steeper learning curve a worthwhile investment for a truly personalized setup.
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
Epomaker TH40
Layout size
75%
40%
Battery
4,000 mAh
3,000 mAh
A larger battery means fewer cables during the day
Ergonomics
Standard
Split Spacebar
Case material
ABS, Aluminum
ABS
Knob
Yes
No
- Ajazz AK820 Pro
- Epomaker TH40
- Performance
- 6174
- Build quality
- 6675
- Productivity
- 8262
- Customizability
- 7285
- Portability
- 7984
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
- Switch options: Linear
- Mount style: Gasket Mount
- Keycaps: PBT
What will you mostly use it for?
The Ajazz AK820 Pro is the clear choice for traditional office work, gaming, and content creation where its 75% layout and included screen provide immediate utility. The Epomaker TH40 excels in specialized scenarios like programming and travel, where its ultra-compact size and deep VIA programmability are primary assets. For hardware modding, the TH40 has an edge due to its detailed foam kit and open firmware support.
Pick the Ajazz AK820 Pro
- The 75% layout includes dedicated arrow keys and function row, which are commonly used in games.
- Its larger form factor may provide more stability during intense use.
- The vendor listing confirms a 1000Hz polling rate in wired and 2.4GHz modes.
What owners say
Ratings and quotes collected from verified store reviews, including the critical ones.
Ajazz AK820 Pro
256 owner reviews
“It's a nice keyboard, has a nice sound when typing. I like the dedicated volume know and it's easy to load gifs onto the little screen using the ajazz software”
“So recently i started to notice my w key stop completely and have to press again and again for the input, please can you assist me in this matter”
Epomaker TH40
56 owner reviews
“Overall good little keyboard for the price, other 40s cost more but better quality, also I could not find a few characters mapped on this one, not in manual or online.”
“The keyboard is very solid ooverall, but frequently will type two letters instead of one on key press. This is a very frustrating issue and leads to many typos. Without this problem, it would easily be a 5-star keyboard.”
Ajazz AK820 Pro vs Epomaker TH40 specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
14 of 24 specs differ
Ajazz AK820 Pro
Epomaker TH40
Switch options
Hot-swappable
Mount style
Sound dampening
Layout size
Layout standard
Ergonomics
Knob
Display
Connection
Max polling rate
Battery
USB-C
Case material
Plate material
Keycaps
Weight
Dimensions
Backlight
QMK
VIA
N-key rollover
Mac & Windows
Released
Compare prices
Live prices from the stores we track, cheapest in-stock offer first.
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Lowest price across stores, Amazon excluded.
Ajazz AK820 Pro vs Epomaker TH40: your questions
The Ajazz AK820 Pro is more beginner-friendly. Its 75% layout is closer to a standard keyboard, so you won't need to memorize complex layers to type numbers or use arrows. The Epomaker TH40's 40% layout has a significant learning curve that might frustrate new users.
The Ajazz AK820 Pro listing does not mention VIA or QMK support. It includes dedicated driver software for customization, but its remapping capabilities are likely more limited than the fully VIA-programmable Epomaker TH40.
On the Epomaker TH40, you type numbers using a function layer. You must hold a modifier key (like the FN key on the split spacebar) and press another key that has been mapped to a number. This requires memorization but is standard for 40% keyboards.
The Ajazz AK820 Pro has a larger 4000mAh battery compared to the Epomaker TH40's 3000mAh battery. While actual runtime depends on usage and RGB settings, the AK820 Pro has the capacity for longer periods between charges.
Yes, both the Ajazz AK820 Pro and Epomaker TH40 list Mac and Windows compatibility in their specifications. The Ajazz AK820 Pro's vendor page specifically mentions you can switch between OS modes using its TFT screen.
For the Ajazz AK820 Pro, the vendor specs list a 1000Hz polling rate in both wired and 2.4GHz modes, and 125Hz in Bluetooth mode. The Epomaker TH40 also lists a 1000Hz rate for wired/2.4G and 125Hz for Bluetooth.
The Ajazz AK820 Pro uses a gasket mount with a flex-cut PC plate and PCB to reduce vibration. The Epomaker TH40's description is more detailed, listing a gasket mount with Poron plate foam, an IXPE switch pad, and bottom Poron foam for acoustics.
The Epomaker TH40 is significantly more portable. It is a 40% layout measuring 258 x 97 x 35 mm and weighs 500g. The Ajazz AK820 Pro is a 75% layout at 327 x 136 x 40 mm and weighs 810g.
Both use PBT keycaps. The Ajazz AK820 Pro uses an OEM profile with double-shot manufacturing. The Epomaker TH40 uses a dye-sublimated Cherry profile. The TH40's Cherry profile is typically lower than OEM.
Both are listed with linear switch types. The Ajazz AK820 Pro vendor page details specific Ajazz linear switches like the Gift, Flying Fish, and Dreamy switches. The Epomaker TH40 listing mentions it comes with Epomaker Flamingo switches, which are also linear.
Yes, both keyboards feature hot-swappable sockets. The Ajazz AK820 Pro supports 3-pin and 5-pin mechanical switches. The Epomaker TH40 also has a 3/5-pin hotswap PCB, allowing you to easily install aftermarket switches.
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