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Head to head · Prices checked Nov 11, 2026

Epomaker TH40 vs Keychron K9 Pro

Get the Epomaker TH40 for the 3,000 mAh battery.

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Quick verdict

Which one should you get?

Get the

Epomaker TH40

Battery

Build quality in the top 35% of 40% boards under $150.

Rules this board out

  • 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.

Get the

Keychron K9 Pro

Build quality in the top 15% of 60% boards under $100.

Rules this board out

  • Low-profile switches and keycaps only. Standard MX keycaps will not fit.
  • North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
  • Compact layout only. No function row, dedicated arrow keys, or numpad.

What actually differs

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 TH40

Keychron K9 Pro

  • Layout size

    40%

    60%

  • Connection

    Bluetooth, 2.4 GHz, Wired

    Bluetooth, Wired

    Wireless for several devices and wired for lower latency

  • Battery

    3,000 mAh

    1,550 mAh

    A larger battery means fewer cables during the day

  • Low profile

    No

    Yes

  • Ergonomics

    Split Spacebar

    Standard

KeebFinder scores

How we score
  • Epomaker TH40
  • Keychron K9 Pro
Performance
73
75
Build quality
75
80
Productivity
62
74
Customizability
85
89
Portability
83
86

What they share

  • Hot-swappable
  • Max polling rate: 1,000 Hz
  • QMK
  • VIA
  • Keycaps: PBT
See every spec side by side

From real owners

What owners say

Ratings and quotes collected from verified store reviews, including the critical ones.

Epomaker TH40

3.9

56 owner reviews

Praise
“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.”
pstraghanVerified buyer· via Epomaker
Critique
“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.”
Zackary L.Verified buyer· via Epomaker

Keychron K9 Pro

5.0

1 owner reviews

Praise
“This keyboard is thin, light, and has a small footprint, making it suitable for carrying around a bit, such as between one's seat and a conference room. The keyswitches used on this keyboard are also compatible with nuphy models, allowing for customization. I…”
DMY235· via Keychron

Full specs

Epomaker TH40 vs Keychron K9 Pro specs

Every tracked spec, side by side. Rows marked with a dot differ between the boards.

14 of 25 specs differ

Epomaker TH40

Keychron K9 Pro

Typing & switches

Switch options

Linear
Clicky, Linear, Tactile

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
Tray Mount

Low profile

No
Yes

Layout

Layout size

40%
60%

Layout standard

ANSI
ANSI

Ergonomics

Split Spacebar
Standard

Display

None
None

Media keys

No
Yes

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired
Bluetooth, Wired

Max polling rate

1,000 Hz
1,000 Hz

Battery

3,000 mAhBetter
1,550 mAh

USB-C

No
Yes

Build & materials

Case material

ABS
ABS, Aluminum, Plastic

Plate material

Plastic, Polycarbonate
—

Keycaps

PBT
PBT

Weight

500 g
410 g

Dimensions

35 x 258 x 97 mm
20 x 287 x 98 mm

Typing angle

—
3°

Backlight

RGB, south-facing
RGB, north-facing

Firmware & software

QMK

Yes
Yes

VIA

Yes
Yes

N-key rollover

Yes
Yes

Mac & Windows

Yes
Yes

Extras

Released

2024
2023

Where to buy

Compare prices

Live prices from the stores we track, cheapest in-stock offer first.

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Lowest price across stores, Amazon excluded.

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