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Head to head · Prices checked Oct 21, 2026

Epomaker RT82 vs Jamesdonkey A3 3.0

Get the Epomaker RT82 for the 4,000 mAh battery and via. Get the Jamesdonkey A3 3.0 for knob and qmk.

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.

Epomaker RT82

Jamesdonkey A3 3.0

  • Battery

    4,000 mAh

    3,750 mAh

  • Knob

    No

    Yes

  • Display

    LCD

    None

  • QMK

    No

    Yes

  • VIA

    Yes

    No

KeebFinder scores

How we score
  • Epomaker RT82
  • Jamesdonkey A3 3.0
Performance
78
54
Build quality
74
60
Productivity
83
80
Customizability
78
82
Portability
79
76

What they share

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

From real owners

What owners say

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

Epomaker RT82

4.6

40 owner reviews

Praise
“I love the sound, the keyboard was shipped fast, but i have found some of the keys have input issues at times where it doesn't register the key being pushed”
Jennifer W.Verified buyer· via Epomaker
Critique
“I received an informative sms two months ago that the keyboard is arriving, It has still not arrived.”
sam k.Verified buyer· via Epomaker

Jamesdonkey A3 3.0

No owner reviews collected yet.

Full specs

Epomaker RT82 vs Jamesdonkey A3 3.0 specs

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

11 of 26 specs differ

Epomaker RT82

Jamesdonkey A3 3.0

Typing & switches

Switch options

Linear, Silent
—

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
Gasket Mount

Sound dampening

Yes
Yes

Layout

Layout size

75%
75%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Knob

No
Yes

Display

LCD
None

Media keys

No
Yes

Connectivity & battery

Connection

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

Max polling rate

1,000 Hz
—

Battery

4,000 mAhBetter
3,750 mAh

USB-C

Yes
No

Build & materials

Case material

ABS
—

Plate material

Polycarbonate
—

Keycaps

PBT
PBT

Weight

1,000 g
—

Dimensions

40 x 327 x 143 mm
42 x 148 x 329 mm

Typing angle

5°
—

Backlight

RGB, south-facing
RGB

Firmware & software

QMK

No
Yes

VIA

Yes
No

N-key rollover

Yes
No

Mac & Windows

Yes
Yes

Extras

Released

2025
2024

Where to buy

Compare prices

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

Lowest price across stores, Amazon excluded.

  • EpomakerUS

    In stock
    $85Visit
  • AmazonGlobal

    Check price
    Visit
  • MechkeysCN

    In stock
    $89Visit
  • AmazonGlobal

    Check price
    ~$89Visit

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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