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Head to head · Prices checked Oct 29, 2026

AULA F75 vs GravaStar Mercury K1Value vs Battery Life

Choose the AULA F75 for its extensive features and lower cost, or the GravaStar Mercury K1 for its massive battery and unique aesthetic.

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Quick verdict

Which one should you get?

Get the

AULA F75

Value

Build quality in the bottom 30% of 75% boards under $50.

If you want

  • Extensive feature set including a multimedia knob, rapid trigger, and screw-in stabilizers.
  • Detailed five-layer sound dampening with Poron foam, IXPE, PET, and silicone pads.
  • Includes silent switch option and Cherry-profile double-shot PBT keycaps.

Rules this board out

  • North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
  • South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.

Get the

GravaStar Mercury K1

Battery Life

Build quality in the top 50% of 75% boards under $150.

If you want

  • Massive 8000mAh battery capacity for very long wireless usage.
  • Full aluminum alloy case exoskeleton for a premium build feel.
  • Unique aesthetic with a described 'three-sided streamer effect' and flowing metal frame design.

Bottom line

Your budget and priority features dictate the choice. The AULA F75 delivers exceptional value, packing advanced gaming features, superior sound engineering, and a multimedia knob into a more affordable package. The GravaStar Mercury K1 is for users who prioritize unmatched battery life and a distinctive, all-metal design above all else, and are willing to pay a premium for it.

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 F75

GravaStar Mercury K1

  • Battery

    4,000 mAh

    8,000 mAh

    A larger battery means fewer cables during the day

  • Case material

    Plastic

    Aluminum

  • Switch options

    Linear, Silent

    Linear

  • Knob

    Yes

    No

  • Weight

    1,023 g

    1,080 g

    Heavier boards stay planted and lighter ones travel

KeebFinder scores

How we score
  • AULA F75
  • GravaStar Mercury K1
Performance
64
66
Build quality
66
67
Productivity
92
67
Customizability
82
64
Portability
83
92

What they share

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

Best for

What will you mostly use it for?

The AULA F75 is the more versatile choice, winning for gaming, programming, modding, and content creation due to its gaming features, knob, detailed sound design, and included accessories. The GravaStar Mercury K1 takes the office category decisively with its double-capacity battery. For travel, it's a tie, balancing the F75's slimmer profile against the K1's exceptional battery life.

For gaming

Pick the AULA F75

  • The AULA F75 lists a 1000 Hz polling rate for potentially lower latency.
  • It includes a rapid trigger feature, which is noted as a specific gaming-oriented extra feature.
  • The vendor description mentions an 'ultra-responsive low-latency' connection.

Full specs

AULA F75 vs GravaStar Mercury K1 specs

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

12 of 24 specs differ

AULA F75

GravaStar Mercury K1

Typing & switches

Switch options

Linear, Silent
Linear

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
Gasket Mount

Sound dampening

Yes
No

Screw-in stabilizers

Yes
No

Layout

Layout size

75%
75%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Knob

Yes
No

Display

None
None

Media keys

Yes
No

Connectivity & battery

Connection

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

Max polling rate

1,000 Hz
—

Battery

4,000 mAh
8,000 mAhBetter

USB-C

Yes
Yes

Build & materials

Case material

Plastic
Aluminum

Plate material

—
POM

Keycaps

ABS, PBT
—

Weight

1,023 g
1,080 g

Dimensions

43 x 143 x 323 mm
46 x 343 x 156 mm

Backlight

RGB, south-facing
RGB

Firmware & software

N-key rollover

Yes
No

Mac & Windows

Yes
Yes

Extras

Released

2023
2024

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.

AULA F755 stores

FAQ

AULA F75 vs GravaStar Mercury K1: your questions

The GravaStar Mercury K1 has a significantly larger 8000mAh battery, which should provide much longer usage between charges compared to the AULA F75's 4000mAh battery. The vendor description for the K1 emphasizes its streamlined design for extended use.

Yes, according to the Epomaker vendor page, the AULA F75 has downloadable software. The listing specifies that the software supports Windows systems. It is used for customizing the RGB lighting and key functions.

Yes, both keyboards feature hot-swappable sockets. This allows you to easily change the mechanical switches without soldering. The GravaStar vendor page notes its sockets support both 3-pin and 5-pin switches.

The AULA F75 offers a silent switch type, which is specifically designed to reduce noise. Furthermore, its five-layer sound dampening system with foam and silicone pads is engineered to minimize typing noise. The GravaStar K1 uses linear switches which are also relatively quiet, but lacks the described multi-foam construction.

Rapid trigger is listed as an extra feature for the AULA F75. It is a gaming-oriented function that allows for faster keystroke resetting, which can be beneficial in fast-paced games. This feature is not mentioned in the specifications for the GravaStar Mercury K1.

The AULA F75 uses Cherry-profile double-shot PBT keycaps, as per its vendor description. PBT is known for its durability and resistance to shine. The keycap material for the GravaStar Mercury K1 is not specified in the provided information.

Based on the provided data, neither keyboard listing includes a wrist rest in the package contents. The AULA F75 comes with the keyboard, a 2.4G dongle, a Type-C cable, a keycap/switch puller, and a manual.

The GravaStar Mercury K1 uses a POM plate. The plate material sits between the switches and the PCB and influences the typing sound and feel. The AULA F75's plate material is not specified in the provided metadata.

Yes, both keyboards list 'Mac/Win Support' as an extra feature. This indicates they should be compatible with macOS and Windows operating systems. The specific key legends or function key mappings for Mac are not detailed.

The keyboards have very similar weights. The AULA F75 weighs 1023 grams, while the GravaStar Mercury K1 weighs 1080 grams. The difference of 57 grams is minor, and both are substantial, sturdy keyboards.

According to the GravaStar vendor description, the K1 features an 'unprecedented three-sided streamer effect' created by 'Aethereal catalysts.' This is a unique RGB lighting effect that transforms the look of the keyboard's aluminum exoskeleton, offering a distinct visual style.

The vendor description for the AULA F75 states it has 'finely-calibrated stabilizers' for a stable and hushed typing experience. It also mentions that the mechanical switches are factory-lubricated. However, it does not explicitly state that the stabilizers themselves are pre-lubricated.

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