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3-way comparison · Prices checked Nov 10, 2026

AULA F75 vs Keychron J2 vs Royal Kludge R75

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Quick verdict

Which one should you get?

Get the

AULA F75

Build quality in the top 30% of 75% boards under $50.

Rules this board out

  • North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
  • South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
$42 at Epomaker

Get the

Keychron J2

Build quality in the top 40% of 75% boards under $100.

$59 at Keychron

Get the

Royal Kludge R75

Build quality in the top 20% of 75% boards under $100.

$59 at Royal Kludge

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.

AULA F75

Keychron J2

Royal Kludge R75

  • Battery

    4,000 mAh

    3,750 mAh

    4,000 mAh

    A larger battery means fewer cables during the day

  • Switch options

    Linear, Silent

    Clicky, Linear, Tactile

    Linear

  • Knob

    Yes

    No

    Yes

  • QMK

    No

    Yes

    Yes

    The deep option when you want to remap every key

  • VIA

    No

    Yes

    Yes

    GUI remapping without compiling firmware

KeebFinder scores

How we score
  • AULA F75
  • Keychron J2
  • Royal Kludge R75
Performance
81
69
71
Build quality
76
71
78
Productivity
93
73
93
Customizability
82
86
88
Portability
83
73
79

What they share

  • Layout size: 75%
  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • Sound dampening
See every spec side by side

Full specs

AULA F75 vs Keychron J2 vs Royal Kludge R75 specs

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

13 of 25 specs differ

AULA F75

Keychron J2

Royal Kludge R75

Typing & switches

Switch options

Linear, Silent
Clicky, Linear, Tactile
Linear

Hot-swappable

Yes
Yes
Yes

Mount style

Gasket Mount
—
Gasket Mount

Sound dampening

Yes
Yes
Yes

Screw-in stabilizers

Yes
No
No

Layout

Layout size

75%
75%
75%

Layout standard

ANSI
ANSI
ANSI

Ergonomics

Standard
Standard
Standard

Knob

Yes
No
Yes

Display

None
None
None

Media keys

Yes
Yes
No

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired
Bluetooth, 2.4 GHz, Wired
Bluetooth, 2.4 GHz, Wired

Max polling rate

1,000 Hz
1,000 Hz
—

Battery

4,000 mAh
3,750 mAh
4,000 mAh

USB-C

Yes
No
Yes

Build & materials

Case material

Plastic
—
—

Keycaps

ABS, PBT
PBT
PBT

Weight

1,023 g
—
680 g

Dimensions

43 x 143 x 323 mm
—
42 x 323 x 42 mm

Backlight

RGB, south-facing
RGB
RGB

Firmware & software

QMK

No
Yes
Yes

VIA

No
Yes
Yes

N-key rollover

Yes
No
No

Mac & Windows

Yes
No
Yes

Extras

Released

2023
2025
2024

Where to buy

Compare prices

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

Prices in USD are converted to your currency and can change at any time. KeebFinder may earn a commission when you buy through these links, at no extra cost to you.

Lowest price across stores, Amazon excluded.

AULA F755 stores
Keychron J23 stores
Royal Kludge R752 stores

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