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Head to head · Prices checked Nov 12, 2026

Epomaker EK21 vs Fiio KB3

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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 EK21

Fiio KB3

  • Connection

    Bluetooth, 2.4 GHz, Wired

    Wired, Bluetooth

    Wireless for several devices and wired for lower latency

  • Case material

    ABS

    Metal, Plastic

  • Switch options

    Linear, Silent

    Linear, Tactile

  • Knob

    Yes

    No

  • Weight

    200 g

    1,060 g

    Heavier boards stay planted and lighter ones travel

KeebFinder scores

How we score
  • Epomaker EK21
  • Fiio KB3
Performance
77
45
Build quality
76
51
Productivity
87
60
Customizability
82
76
Portability
88
88

What they share

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

Full specs

Epomaker EK21 vs Fiio KB3 specs

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

10 of 23 specs differ

Epomaker EK21

Fiio KB3

Typing & switches

Switch options

Linear, Silent
Linear, Tactile

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
Gasket Mount

Sound dampening

Yes
No

Layout

Layout size

Numpad
Numpad

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Knob

Yes
No

Display

None
None

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired
Wired, Bluetooth

Max polling rate

1,000 Hz
—

Battery

1,000 mAh
—

USB-C

Yes
Yes

Build & materials

Case material

ABS
Metal, Plastic

Plate material

Polycarbonate
—

Keycaps

PBT
—

Weight

200 g
1,060 g

Dimensions

29 x 138 x 93 mm
44 x 329 x 140 mm

Backlight

RGB
RGB

Firmware & software

VIA

Yes
No

N-key rollover

Yes
No

Mac & Windows

Yes
Yes

Extras

Released

2025
2023

Where to buy

Compare prices

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

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.

Lowest price across stores, Amazon excluded.

Fiio KB33 stores

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