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3-way comparison · Prices checked Nov 7, 2026

Ajazz AK820 Max vs Ajazz AK820 Pro vs AULA S75 Pro

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Hall effect

Ajazz AK820 Max

Ajazz AK820 Max Magnetic Switch Mechanical Keyboard

4.3 (16)

$59at WhatGeek

90-day low

AJAZZ AK820 Pro

4.6 (256)

$55at Epomaker

90-day low

Screw-in stabilizers

AULA S75 Pro

AULA S75 PRO Tri-mode Wireless Mechanical Keyboard with LCD Screen Creamy

No reviews

$79at WhatGeek

90-day low

Quick verdict

Which one should you get?

Get the

Ajazz AK820 Max

Hall effect

Build quality in the bottom 30% of 75% boards under $100.

Rules this board out

  • Magnetic switches only. Standard MX switches will not fit.

Get the

Ajazz AK820 Pro

Build quality in the bottom 50% 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.

Get the

AULA S75 Pro

Screw-in stabilizers

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

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.

Ajazz AK820 Max

Ajazz AK820 Pro

AULA S75 Pro

  • Hall effect (magnetic)

    Yes

    No

    No

    Adjustable actuation helps in games and not in normal typing

  • Switch options

    Linear, Magnetic

    Linear

    Linear

  • Display

    TFT

    TFT

    LCD

    A case display rather than a typing feature

  • Weight

    850 g

    810 g

    1,000 g

    Heavier boards stay planted and lighter ones travel

  • Screw-in stabilizers

    No

    No

    Yes

    Easier to tune than the plate-mount stabs you get prebuilt

KeebFinder scores

How we score
  • Ajazz AK820 Max
  • Ajazz AK820 Pro
  • AULA S75 Pro
Performance
59
61
85
Build quality
55
66
76
Productivity
85
82
92
Customizability
75
72
79
Portability
81
79
81

What they share

  • Layout size: 75%
  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • Battery: 4,000 mAh
  • Mount style: Gasket Mount
  • Knob
See every spec side by side

Full specs

Ajazz AK820 Max vs Ajazz AK820 Pro vs AULA S75 Pro specs

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

9 of 24 specs differ

Ajazz AK820 Max

Ajazz AK820 Pro

AULA S75 Pro

Typing & switches

Switch options

Linear, Magnetic
Linear
Linear

Hall effect (magnetic)

Yes
No
No

Hot-swappable

Yes
Yes
Yes

Mount style

Gasket Mount
Gasket Mount
Gasket Mount

Sound dampening

Yes
Yes
Yes

Screw-in stabilizers

No
No
Yes

Layout

Layout size

75%
75%
75%

Layout standard

ANSI
ANSI
ANSI

Ergonomics

Standard
Standard
Standard

Knob

Yes
Yes
Yes

Display

TFT
TFT
LCD

Connectivity & battery

Connection

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

Max polling rate

—
—
4,000 Hz

Battery

4,000 mAh
4,000 mAh
4,000 mAh

USB-C

Yes
Yes
Yes

Build & materials

Case material

ABS, PBT
ABS, Aluminum
—

Plate material

FR4
Polycarbonate
—

Keycaps

PBT
PBT
PBT

Weight

850 g
810 g
1,000 g

Dimensions

20 x 333 x 143 mm
40 x 327 x 136 mm
43 x 333 x 147 mm

Backlight

RGB
RGB, south-facing
RGB

Firmware & software

N-key rollover

No
Yes
Yes

Mac & Windows

Yes
Yes
Yes

Extras

Released

2024
2023
2025

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 S75 Pro2 stores

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