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Head to head · Prices checked Nov 2, 2026

Apos Preonic Rev 4 Ortholinear vs MelGeek O2

Get the Apos Preonic Rev 4 Ortholinear for hot-swappable and qmk.

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Quick verdict

Which one should you get?

Get the

Apos Preonic Rev 4 Ortholinear

Hot-swappable

Build quality in the top 50% of Numpad boards under $200.

Get the

MelGeek O2

Build quality in the top 50% of Numpad boards under $150.

Rules this board out

  • Switches are soldered. Swapping them means soldering.
  • North-facing LEDs. Cherry-profile keycaps can hit the switch housing.

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.

Apos Preonic Rev 4 Ortholinear

MelGeek O2

  • Connection

    Wired

    Bluetooth, 2.4 GHz, Wired

    Wireless for several devices and wired for lower latency

  • Hot-swappable

    Yes

    No

    Switch changes without soldering

  • Ergonomics

    Ortholinear

    Standard

  • Case material

    Aluminum

    ABS, Aluminum, Polycarbonate

  • QMK

    Yes

    No

    The deep option when you want to remap every key

KeebFinder scores

How we score
  • Apos Preonic Rev 4 Ortholinear
  • MelGeek O2
Performance
61
54
Build quality
66
65
Productivity
56
54
Customizability
68
50
Portability
65
83

What they share

  • Layout size: Numpad
See every spec side by side

Full specs

Apos Preonic Rev 4 Ortholinear vs MelGeek O2 specs

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

9 of 21 specs differ

Apos Preonic Rev 4 Ortholinear

MelGeek O2

Typing & switches

Switch options

Clicky, Linear, Silent, Tactile
—

Hot-swappable

Yes
No

Mount style

—
Gasket Mount

Sound dampening

No
Yes

Layout

Layout size

Numpad
Numpad

Layout standard

ANSI
ANSI

Ergonomics

Ortholinear
Standard

Display

None
None

Connectivity & battery

Connection

Wired
Bluetooth, 2.4 GHz, Wired

Max polling rate

—
1,000 Hz

Battery

Wired only
2,500 mAh

Build & materials

Case material

Aluminum
ABS, Aluminum, Polycarbonate

Plate material

—
Polycarbonate

Keycaps

—
PBT

Weight

—
650 g

Dimensions

—
135 x 326 x 27 mm

Typing angle

—
4°

Backlight

RGB
RGB, north-facing

Firmware & software

QMK

Yes
No

Mac & Windows

No
Yes

Extras

Released

2026
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.

MelGeek O22 stores

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