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Head to head · Prices checked Oct 23, 2026

Apos OLKB Preonic vs Redragon SPHINX K503

Get the Apos OLKB Preonic for knob and qmk. Get the Redragon SPHINX K503 for n-key rollover.

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 OLKB Preonic

Redragon SPHINX K503

  • Ergonomics

    Ortholinear

    Standard

  • Knob

    Yes

    No

  • QMK

    Yes

    No

  • Layout standard

    Colemak

    ISO, ISO-FR

  • N-key rollover

    No

    Yes

KeebFinder scores

How we score
  • Apos OLKB Preonic
  • Redragon SPHINX K503
Performance
61
77
Build quality
68
43
Productivity
56
50
Customizability
75
48
Portability
40
41

What they share

  • Connection: Wired
See every spec side by side

Full specs

Apos OLKB Preonic vs Redragon SPHINX K503 specs

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

6 of 14 specs differ

Apos OLKB Preonic

Redragon SPHINX K503

Layout

Layout size

—
100%

Layout standard

Colemak
ISO, ISO-FR

Ergonomics

Ortholinear
Standard

Knob

Yes
No

Display

None
None

Connectivity & battery

Connection

Wired
Wired

Build & materials

Case material

Acrylic, Aluminum
—

Keycaps

PBT
—

Weight

—
1,000 g

Dimensions

—
440 x 180 x 40 mm

Backlight

RGB
RGB

Firmware & software

QMK

Yes
No

N-key rollover

No
Yes

Extras

Released

2026
2025

Where to buy

Compare prices

Live prices from the stores we track, cheapest in-stock offer first.

  • AposUS

    In stock
    $25Visit
  • AmazonGlobal

    Check price
    ~$100Visit
  • RedragonCN

    In stock
    $30Visit
  • AmazonGlobal

    Check price
    ~$30Visit

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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