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Head to head · Prices checked Nov 11, 2026

Coolkiller Balloon84 vs Double shell DoubleShell DS84i

Get the Coolkiller Balloon84 for sound dampening. Get the Double shell DoubleShell DS84i for knob.

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Quick verdict

Which one should you get?

Get the

Coolkiller Balloon84

Sound dampening

Build quality in the bottom 40% of 75% boards under $150.

Rules this board out

  • Low-profile switches and keycaps only. Standard MX keycaps will not fit.

Get the

Double shell DoubleShell DS84i

Knob

Build quality in the bottom 5% of 75% boards under $100.

Rules this board out

  • Low-profile switches and keycaps only. Standard MX keycaps will not fit.

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.

Coolkiller Balloon84

Double shell DoubleShell DS84i

  • Switch options

    Linear

    Linear, Tactile

  • Knob

    No

    Yes

  • Weight

    870 g

    798 g

    Heavier boards stay planted and lighter ones travel

  • Sound dampening

    Yes

    No

  • Keycaps

    PC

    PBT

KeebFinder scores

How we score
  • Coolkiller Balloon84
  • Double shell DoubleShell DS84i
Performance
54
61
Build quality
61
40
Productivity
78
58
Customizability
63
59
Portability
83
74

What they share

  • Layout size: 75%
  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • Low profile
See every spec side by side

Full specs

Coolkiller Balloon84 vs Double shell DoubleShell DS84i specs

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

11 of 21 specs differ

Coolkiller Balloon84

Double shell DoubleShell DS84i

Typing & switches

Switch options

Linear
Linear, Tactile

Hot-swappable

Yes
Yes

Low profile

Yes
Yes

Sound dampening

Yes
No

Layout

Layout size

75%
75%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Knob

No
Yes

Display

None
None

Media keys

Yes
No

Connectivity & battery

Connection

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

Battery

3,500 mAh
—

USB-C

Yes
Yes

Build & materials

Case material

Aluminum, Plastic
—

Keycaps

PC
PBT

Weight

870 g
798 g

Dimensions

33 x 144 x 329 mm
25 x 153 x 314 mm

Backlight

White
RGB

Firmware & software

N-key rollover

No
Yes

Mac & Windows

Yes
No

Extras

Released

2024
2023

Where to buy

Compare prices

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

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Lowest price across stores, Amazon excluded.

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