Not sure which keyboard to choose? Try the Keyboard Finder now!

Head to head · Prices checked Oct 21, 2026

Jamesdonkey A3 vs Neo One of Zero Si75 HE

Get the Neo One of Zero Si75 HE for hall effect and rapid trigger.

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

Neo One of Zero Si75 HE

  • Hall effect (magnetic)

    No

    Yes

  • Rapid trigger

    No

    Yes

  • Connection

    Bluetooth, 2.4 GHz, Wired

    Wired

  • Case material

    ABS, PBT, Plastic, Polycarbonate

    ABS, Polycarbonate

  • Switch options

    Clicky, Linear, Tactile

    Magnetic

KeebFinder scores

How we score
  • Jamesdonkey A3
  • Neo One of Zero Si75 HE
Performance
62
95
Build quality
66
70
Productivity
91
91
Customizability
85
74
Portability
79
65

What they share

  • Layout size: 75%
  • Hot-swappable
  • Mount style: Gasket Mount
  • Knob
  • Sound dampening
  • Keycaps: PBT
See every spec side by side

Full specs

Jamesdonkey A3 vs Neo One of Zero Si75 HE specs

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

10 of 26 specs differ

Jamesdonkey A3

Neo One of Zero Si75 HE

Typing & switches

Switch options

Clicky, Linear, Tactile
Magnetic

Hall effect (magnetic)

No
Yes

Rapid trigger

No
Yes

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
Gasket Mount

Sound dampening

Yes
Yes

Screw-in stabilizers

Yes
Yes

Layout

Layout size

75%
75%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Knob

Yes
Yes

Display

None
None

Media keys

Yes
No

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired
Wired

Max polling rate

—
8,000 Hz

Battery

3,000 mAh
Wired only

USB-C

Yes
Yes

Build & materials

Case material

ABS, PBT, Plastic, Polycarbonate
ABS, Polycarbonate

Plate material

Polycarbonate
Aluminum

Keycaps

PBT
PBT

Weight

1,000 g
—

Dimensions

40 x 136 x 321 mm
—

Backlight

RGB
RGB, south-facing

Firmware & software

N-key rollover

Yes
No

Mac & Windows

Yes
Yes

Extras

Released

2022
2026

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
  • MKUS

    In stock
    $114Visit
  • AmazonGlobal

    Check price
    ~$114Visit

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.

Still torn?

Answer a few quick questions and the keyboard finder ranks 2,000+ boards by how you will actually use yours.