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Head to head · Prices checked Oct 21, 2026

Jamesdonkey A3 vs Apos NPKC RO75

Get the Jamesdonkey A3 for knob. Get the Apos NPKC RO75 for the 6,000 mAh battery.

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.

Jamesdonkey A3

Apos NPKC RO75

  • Battery

    3,000 mAh

    6,000 mAh

  • Case material

    ABS, PBT, Plastic, Polycarbonate

    Aluminum

  • Switch options

    Clicky, Linear, Tactile

    Linear, Tactile

  • Knob

    Yes

    No

  • Weight

    1,000 g

    1,680 g

KeebFinder scores

How we score
  • Jamesdonkey A3
  • Apos NPKC RO75
Performance
62
86
Build quality
66
81
Productivity
91
88
Customizability
85
82
Portability
79
92

What they share

  • Layout size: 75%
  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • Mount style: Gasket Mount
  • Sound dampening
See every spec side by side

Full specs

Jamesdonkey A3 vs Apos NPKC RO75 specs

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

13 of 27 specs differ

Jamesdonkey A3

Apos NPKC RO75

Typing & switches

Switch options

Clicky, Linear, Tactile
Linear, Tactile

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
Gasket Mount

Sound dampening

Yes
Yes

Screw-in stabilizers

Yes
No

Layout

Layout size

75%
75%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Knob

Yes
No

Display

None
None

Media keys

Yes
No

Connectivity & battery

Connection

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

Max polling rate

—
4,000 Hz

Battery

3,000 mAh
6,000 mAhBetter

USB-C

Yes
Yes

Build & materials

Case material

ABS, PBT, Plastic, Polycarbonate
Aluminum

Plate material

Polycarbonate
FR4, Polycarbonate

Keycaps

PBT
ABS, PBT

Weight

1,000 g
1,680 g

Dimensions

40 x 136 x 321 mm
35 x 312 x 135 mm

Typing angle

—
15°

Backlight

RGB
RGB

Firmware & software

VIA

No
Yes

VIAL

No
Yes

N-key rollover

Yes
Yes

Mac & Windows

Yes
Yes

Extras

Released

2022
2025

Where to buy

Compare prices

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

Lowest price across stores, Amazon excluded.

  • MechkeysCN

    In stock
    $89Visit
  • AmazonGlobal

    Check price
    ~$89Visit
  • WhatGeekCN

    Out of stock
    $89Visit
  • AposUS

    In stock
    $109Visit
  • AmazonGlobal

    Check price
    ~$109Visit

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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