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3-way comparison · Prices checked Oct 21, 2026

AULA F75 vs Keychron J2 vs Royal Kludge R75

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

  • Switch options

    Linear, Silent

    Clicky, Linear, Tactile

    Linear

  • Knob

    Yes

    No

    Yes

  • QMK

    No

    Yes

    Yes

  • VIA

    No

    Yes

    Yes

KeebFinder scores

How we score
  • AULA F75
  • Keychron J2
  • Royal Kludge R75
Performance
64
70
72
Build quality
66
71
79
Productivity
92
74
93
Customizability
82
86
88
Portability
82
73
79

What they share

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

From real owners

What owners say

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

AULA F75

4.5

509 owner reviews

Praise
“Works exactly as intended and still works as new. The 2.4 GHz Receiver doesn't communicate correctly and isn't reliable but on BT and Cable it works perfectly”
MegaNoobyYTVerified buyer· via Epomaker
Critique
“I made an order for EPOMAKER x AULA 75 with express shipping on 27/1/24. Emailed the team TWICE. Now its 19/3/24, and i still dont have the item. Very poor service”
Faisal A.Verified buyer· via Epomaker

Keychron J2

4.4

11 owner reviews

Praise
“I absolutely love this keyboard. It sounds amazing and the red switches are so smooth in feel. The colours are also great.”
WojciechVerified buyer· via Keychron
Critique
“The keyboard is nice, but it took over 3 weeks of shipping to arrive. On their website it says they deliver in a week or under to the US.”
JaydenVerified buyer· via Keychron

Royal Kludge R75

No owner reviews collected yet.

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.

Lowest price across stores, Amazon excluded.

AULA F755 stores
  • EpomakerUS

    In stock
    $49Visit
  • VelocifireCN

    In stock
    $66Visit
  • AmazonGlobal

    Check price
    Visit
  • WhatGeekCN

    Out of stock
    $67Visit
Keychron J23 stores
  • KeychronHK

    In stock
    $59Visit
  • Keychron (DE)DE

    In stock
    $105Visit
  • AmazonGlobal

    Check price
    ~$59Visit
  • Royal KludgeUS

    In stock
    $59Visit
  • AmazonGlobal

    Check price
    Visit

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