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Head to head · Prices checked Oct 21, 2026

Apos Preonic Rev 4 Ortholinear vs Epomaker EK21

Get the Epomaker EK21 for knob.

Apos x OLKB Preonic Rev 4 Ortholinear Keyboard

Apos Preonic Rev 4 Ortholinear

from$150at Apos

90-day low

Shop nowSee all prices
EPOMAKER EK21

Knob

Epomaker EK21

4.5 · 34 reviews

from$39at Epomaker

Shop nowSee all prices

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

Epomaker EK21

  • Connection

    Wired

    Bluetooth, 2.4 GHz, Wired

  • Ergonomics

    Ortholinear

    Standard

  • Case material

    Aluminum

    ABS

  • Switch options

    Clicky, Linear, Silent, Tactile

    Linear

  • Knob

    No

    Yes

KeebFinder scores

How we score
  • Apos Preonic Rev 4 Ortholinear
  • Epomaker EK21
Performance
61
79
Build quality
66
77
Productivity
56
88
Customizability
68
82
Portability
66
88

What they share

  • Layout size: Numpad
  • Hot-swappable
See every spec side by side

From real owners

What owners say

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

Apos Preonic Rev 4 Ortholinear

No owner reviews collected yet.

Epomaker EK21

4.5

34 owner reviews

Praise
“Great wireless connectivity, sounds and feels as good as my 200$ custom keyboard. Great buy especially with the discount, would definitely buy again.”
Jared T.Verified buyer· via Epomaker
Critique
“I have had this thing for years, I have updated to every Json file and firmware file I can find and it has NEVER worked right, Either the Json file or the firmware is jacked up and no one at Epomaker can give me any explanation. This numpad is the reason I…”
Chris· via Epomaker

Full specs

Apos Preonic Rev 4 Ortholinear vs Epomaker EK21 specs

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

12 of 24 specs differ

Apos Preonic Rev 4 Ortholinear

Epomaker EK21

Typing & switches

Switch options

Clicky, Linear, Silent, Tactile
Linear

Hot-swappable

Yes
Yes

Mount style

—
Gasket Mount

Sound dampening

No
Yes

Layout

Layout size

Numpad
Numpad

Layout standard

ANSI
ANSI

Ergonomics

Ortholinear
Standard

Knob

No
Yes

Display

None
None

Connectivity & battery

Connection

Wired
Bluetooth, 2.4 GHz, Wired

Max polling rate

—
1,000 Hz

Battery

Wired only
1,000 mAh

USB-C

No
Yes

Build & materials

Case material

Aluminum
ABS

Plate material

—
Polycarbonate

Keycaps

—
PBT

Weight

—
200 g

Dimensions

—
29 x 138 x 93 mm

Backlight

RGB
RGB

Firmware & software

QMK

Yes
No

VIA

No
Yes

N-key rollover

No
Yes

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.

Lowest price across stores, Amazon excluded.

  • AposUS

    In stock
    $150Visit
  • AmazonGlobal

    Check price
    ~$150Visit
  • EpomakerUS

    In stock
    $39Visit
  • AmazonGlobal

    Check price
    ~$39Visit

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.

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