Head to head · Prices checked Nov 12, 2026

AULA F75 Ultra vs Keychron K4 V2

Get the AULA F75 Ultra for the 10,000 mAh battery.

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Battery

AULA F75 Ultra

4.7 (3)4.7 · 3 reviews

from$72at Epomaker

90-day lowLowest price in 90 days

Compare 2 stores

Keychron K4 V2

Keychron K4 Kabellose Mechanische Tastatur (German ISO-DE Layout) - Version 2

4.8 (1,198)4.8 · 1,198 reviews

from$59at Keychron

90-day lowLowest price in 90 days

Compare 4 stores

Quick verdict

Which one should you get?

Get the

AULA F75 Ultra

Battery

Build quality in the top 35% of 75% boards under $100.

Rules this board out

South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
No ISO layout. ISO-DE, UK, and other ISO variants are not offered.
No numpad.

$72 at Epomaker

Get the

Keychron K4 V2

Build quality in the top 40% of 96% boards under $100.

Rules this board out

North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
Compact full-size layout. The numpad is present, the gaps of a full-size board are not.

$59 at Keychron

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 Ultra

Keychron K4 V2

Layout size
75%
96%
Connection
Bluetooth, 2.4 GHz, Wired
Bluetooth, Wired
Wireless for several devices and wired for lower latency
Battery
10,000 mAh
4,000 mAh
A larger battery means fewer cables during the day
Case material
ABS
ABS, Aluminum, Plastic
Switch options
Linear
Clicky, Linear, Tactile

KeebFinder scores

How we score

AULA F75 Ultra
Keychron K4 V2

Performance: 81
63
Build quality: 72
70
Productivity: 89
67
Customizability: 78
70
Portability: 91
55

What they share

Hot-swappable
Max polling rate: 1,000 Hz

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 Ultra

4.7

3 owner reviews

Praise

“Keyboard sounds nice, works nice, the software is a bit of an issue to set up as there aren't any proper instructions but you just need the drivers and the VIA app.”

Ajmain S.Verified buyer· via Epomaker

Keychron K4 V2

4.8

1,198 owner reviews

Praise

“I'm a do it yourself pc builders and the ketron is perfect. I can do wired for my work Mac and back to windows for my gaming PC. Easy buy, easy typing. Love it.”

Gerald W.Verified buyer· via Keychron

Full specs

AULA F75 Ultra vs Keychron K4 V2 specs

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

16 of 25 specs differ

Spec

AULA F75 Ultra

Keychron K4 V2

Typing & switches

Switch options

Linear

Clicky, Linear, Tactile

Hot-swappable

Yes

Mount style

Gasket Mount

Plate Mount, Tray Mount

Sound dampening

Yes

Layout

Layout size

75%

96%

Layout standard

ANSI

ANSI, ISO, ISO-DE, ISO-ES, ISO-Nordic, ISO-UK, JIS

Ergonomics

Standard

Knob

Yes

Display

None

Media keys

Yes

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired

Bluetooth, Wired

Max polling rate

1,000 Hz

Battery

10,000 mAhBetter

4,000 mAh

USB-C

Yes

Build & materials

Case material

ABS

ABS, Aluminum, Plastic

Plate material

Polycarbonate

Aluminum, Plastic

Keycaps

PBT, PC

ABS

Weight

1,100 g

—

Dimensions

43 x 323 x 143 mm

—

Typing angle

10°

—

Backlight

RGB, south-facing

RGB, north-facing

Firmware & software

VIA

Yes

N-key rollover

Yes

Mac & Windows

Yes

Extras

Released

2026

2020

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.

AULA F75 Ultra2 stores