Epomaker EK21 vs Keychron K0 Max
Choose the Epomaker EK21 for a gasket-mounted feel and broader switch compatibility, or the Keychron K0 Max for low-profile typing and QMK customization.
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4.5 · 34 reviews
from$39at Epomaker
4.1 · 11 reviews
from$64at Keychron
Which one should you get?
Get the
Epomaker EK21
Battery
Build quality in the top 25% of Numpad boards under $50.
- Gasket mount, flex-cut PC plate, and 3-layer PORON and IXPE dampening.
- Hot-swappable support for 3/5-pin mechanical switches.
- VIA support and an aluminum alloy knob for macros, media control, and data entry.
Get the
Keychron K0 Max
Build quality in the top 10% of Numpad boards under $100.
- Low-profile design with low-profile double-shot PBT keycaps.
- QMK support and Keychron Launcher for remapping and macros.
- 27-key numpad layout with a macro column and rotary encoder knob.
- Low-profile switches and keycaps only. Standard MX keycaps will not fit.
- North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
Pick the Epomaker EK21 if you want a gasket-mounted numpad and the freedom to use 3/5-pin mechanical switches. Choose the Keychron K0 Max if you prefer low-profile keys, a macro column, and QMK-based customization. Check the K0 Max's low-profile switch and keycap limits before planning modifications.
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.
Epomaker EK21
Keychron K0 Max
Battery
1,000 mAh
750 mAh
A larger battery means fewer cables during the day
Low profile
No
Yes
Case material
ABS
Aluminum, Plastic
Switch options
Linear
Clicky, Linear, Silent, Tactile
Mount style
Gasket Mount
Plate Mount
- Epomaker EK21
- Keychron K0 Max
- Performance
- 7879
- Build quality
- 7685
- Productivity
- 8795
- Customizability
- 8292
- Portability
- 8886
- Layout size: Numpad
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
- Max polling rate: 1,000 Hz
- Knob
- VIA
What will you mostly use it for?
The K0 Max has an edge for office use, programming, travel, and content creation, particularly if its low-profile format or extra keys suit your setup. The EK21 is the more flexible choice for switch changes, with support for 3/5-pin mechanical switches. Gaming is a draw on the listed polling rate, NKRO, and connection options. Your preference for a gasket-mounted build or low-profile layout is likely to settle the choice.
It's a tie
- Both list a 1000 Hz polling rate and N-key rollover.
- Both support 2.4 GHz wireless and wired connections.
What owners say
Ratings and quotes collected from verified store reviews, including the critical ones.
Epomaker EK21
34 owner reviews
“Great wireless connectivity, sounds and feels as good as my 200$ custom keyboard. Great buy especially with the discount, would definitely buy again.”
“I have had this thing for years, I have updated to every Json file and firmware file I can find and it has NEVER worked right, Either the Json file or the firmware is jacked up and no one at Epomaker can give me any explanation. This numpad is the reason I…”
Keychron K0 Max
11 owner reviews
“Perfect addition to my Nuphy Air75 v2. The keys line up well, and this gives me a knob and 10-key when I’m at my desk!”
“The K0 MAX is just right with its red Gateron switches! Typing on it feels really natural. 2 Stars less because the battery needs to be loaded again after 3 or four days of occasional usage.”
Epomaker EK21 vs Keychron K0 Max specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
9 of 26 specs differ
Epomaker EK21
Keychron K0 Max
Switch options
Hot-swappable
Mount style
Low profile
Sound dampening
Screw-in stabilizers
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.
Epomaker EK21 vs Keychron K0 Max: your questions
The EK21 uses a gasket mount and supports 3/5-pin mechanical switches. The K0 Max is a low-profile numpad with QMK support and a 27-key layout.
The Keychron K0 Max is listed with 27 keys and a macro column. The EK21 is listed as a 20-key numpad with a dedicated knob.
Both support Bluetooth, 2.4 GHz wireless, and wired connections. The EK21's vendor description specifies USB-C wired connectivity.
Both list a 1000 Hz polling rate and N-key rollover, and both support 2.4 GHz and wired connections. Those listed features do not establish a clear gaming advantage for either model.
No. Keychron says the K0 Max is compatible with Gateron and Keychron low-profile mechanical switches only. The EK21, by contrast, supports hot-swappable 3/5-pin mechanical switches.
The K0 Max has north-facing LEDs, and its compatibility rules warn that Cherry-profile keycaps can hit the switch housing. Its included keycaps are low-profile double-shot PBT.
Yes, VIA support is listed for the EK21, and Epomaker describes it as programmable through VIA. The product description also says you can customize keys for macros, media control, and data entry.
Yes, QMK support is listed, and Keychron describes using its Launcher web app for key remapping and macros. The vendor specifies Windows, macOS, and Linux support for the web-based configurator.
Keychron lists the K0 Max at 176.3 g, while the EK21 is listed at 200 g. On those stated weights, the K0 Max is lighter.
The EK21 has a listed 1000mAh battery, while the K0 Max has a 750mAh battery. Keychron also lists up to 50 hours for the K0 Max, but the EK21 vendor description does not give a matching runtime figure.
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