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Head to head · Prices checked Nov 11, 2026

DOIO KB30 01 vs Keychron J4

Get the DOIO KB30 01 for knob.

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Quick verdict

Which one should you get?

Get the

DOIO KB30 01

Knob

Rules this board out

  • Macropad only. This is not a full keyboard.

Get the

Keychron J4

Build quality in the top 30% of 80% boards under $100.

Rules this board out

  • North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
  • No 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.

DOIO KB30 01

Keychron J4

  • Layout size

    Macropad

    80%

  • Connection

    Wired

    Bluetooth, 2.4 GHz, Wired

    Wireless for several devices and wired for lower latency

  • Case material

    Acrylic, Aluminum

    ABS

  • Switch options

    Linear, Silent

    Clicky, Linear, Tactile

  • Knob

    Yes

    No

KeebFinder scores

How we score
  • DOIO KB30 01
  • Keychron J4
Performance
69
82
Build quality
79
71
Productivity
82
89
Customizability
92
89
Portability
74
73

What they share

  • Hot-swappable
  • QMK
  • VIA
See every spec side by side

Full specs

DOIO KB30 01 vs Keychron J4 specs

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

13 of 25 specs differ

DOIO KB30 01

Keychron J4

Typing & switches

Switch options

Linear, Silent
Clicky, Linear, Tactile

Hot-swappable

Yes
Yes

Sound dampening

No
Yes

Layout

Layout size

Macropad
80%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Knob

Yes
No

Display

OLED
None

Media keys

No
Yes

Connectivity & battery

Connection

Wired
Bluetooth, 2.4 GHz, Wired

Max polling rate

—
1,000 Hz

Battery

Wired only
4,000 mAh

USB-C

Yes
Yes

Build & materials

Case material

Acrylic, Aluminum
ABS

Plate material

—
Steel

Keycaps

—
PBT

Weight

490 g
870 g

Dimensions

36 x 113 x 217 mm
38 x 366 x 138 mm

Typing angle

—
10°

Backlight

RGB
RGB, north-facing

Firmware & software

QMK

Yes
Yes

VIA

Yes
Yes

N-key rollover

No
Yes

Mac & Windows

Yes
Yes

Extras

Released

2022
2025

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.

DOIO KB30 012 stores
Keychron J43 stores

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