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Head to head · Prices checked Oct 21, 2026

AULA EA75 Max vs Redragon PENUMBRA K687

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.

AULA EA75 Max

Redragon PENUMBRA K687

  • Connection

    Bluetooth, 2.4 GHz, Wired

    Wired

  • Case material

    ABS

    Aluminum

  • Switch options

    Linear, Silent

    Linear

  • Display

    TFT

    None

  • Weight

    958.5 g

    1,500 g

KeebFinder scores

How we score
  • AULA EA75 Max
  • Redragon PENUMBRA K687
Performance
79
79
Build quality
69
73
Productivity
83
71
Customizability
73
61
Portability
80
60

What they share

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

From real owners

What owners say

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

AULA EA75 Max

4.8

16 owner reviews

Praise
“The only bad thing is that the software is pretty hard to found, I don’t even know if it’s out there actually, anyways the product fantastic, the switches are smooth and lubed and the quality of the product is excellent”
MarcosVerified buyer· via Epomaker
Critique
“Good switches, nice keycaps. Shitty outsated driver. Some rgb doesn’t change even when using its own setting, doesn’t work with signalRGB. Sometimes when I turn on my pc the keyboard glitches and i have to switch to and from wireless mode for it to work…”
Aitor i.Verified buyer· via Epomaker

Redragon PENUMBRA K687

No owner reviews collected yet.

Full specs

AULA EA75 Max vs Redragon PENUMBRA K687 specs

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

9 of 23 specs differ

AULA EA75 Max

Redragon PENUMBRA K687

Typing & switches

Switch options

Linear, Silent
Linear

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

Yes
Yes

Display

TFT
None

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired
Wired

Max polling rate

1,000 Hz
—

Battery

5,000 mAh
Wired only

USB-C

Yes
Yes

Build & materials

Case material

ABS
Aluminum

Plate material

Polycarbonate
—

Keycaps

PBT
—

Weight

958.5 g
1,500 g

Dimensions

43 x 333 x 147 mm
43 x 133 x 43 mm

Typing angle

5°
—

Backlight

RGB, south-facing
RGB

Firmware & software

N-key rollover

Yes
Yes

Mac & Windows

Yes
No

Extras

Released

2026
2025

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
    $79Visit
  • AmazonGlobal

    Check price
    Visit
  • RedragonCN

    In stock
    $69Visit
  • AmazonGlobal

    Check price
    ~$69Visit

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