AULA F75 Ultra vs Keychron K3 MaxGasket or Low-Profile
Choose the AULA F75 Ultra for its gasket-mounted, damped build and larger battery, or the Keychron K3 Max for low-profile typing and ISO layout choices.
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4.7 · 3 reviews
from$84at Epomaker
4.1 · 16 reviews
from$89at MK
Which one should you get?
Get the
AULA F75 Ultra
Battery
Build quality in the top 35% of 75% boards under $100.
- Gasket mount with a flex-cut polycarbonate plate.
- Vendor description specifies five sound-damping layers, including foam, silicone, and a PET pad.
- 10000mAh battery, larger than the Keychron's listed 1550mAh battery.
- South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
- No ISO layout. ISO-DE, UK, and other ISO variants are not offered.
Get the
Keychron K3 Max
Build quality in the top 5% of 75% boards under $100.
- Low-profile design with listed 3° and 7° typing-angle options.
- Supports both QMK and VIA.
- Available in ANSI and several ISO layouts, including ISO-UK and ISO-DE.
- Low-profile switches and keycaps only. Standard MX keycaps will not fit.
- North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
Choose the AULA F75 Ultra if you want a gasket mount, layered damping, and a substantially larger listed battery. Choose the Keychron K3 Max if low-profile typing, lighter weight, ISO layouts, or QMK support matter more. Before buying keycaps or switches for either board, check its listed compatibility limits.
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 Ultra
Keychron K3 Max
Battery
10,000 mAh
1,550 mAh
A larger battery means fewer cables during the day
Low profile
No
Yes
Case material
ABS
ABS, Aluminum, Plastic, Wood
Switch options
Linear
Clicky, Linear, Tactile
Mount style
Gasket Mount
Plate Mount
- AULA F75 Ultra
- Keychron K3 Max
- Performance
- 8281
- Build quality
- 7386
- Productivity
- 8994
- Customizability
- 7891
- Portability
- 9177
- Layout size: 75%
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
- Max polling rate: 1,000 Hz
- VIA
- Sound dampening
What will you mostly use it for?
The Keychron K3 Max edges ahead for office work, programming, travel, modding, and content creation based on its low-profile form, lighter listed weight, layout options, and QMK support. Gaming is a tie on the listed polling rate and connection choices, with switch preferences separating the two. The AULA F75 Ultra remains compelling for buyers who prioritize a gasket-mounted build, layered sound damping, and a larger battery. Check the keycap and switch compatibility limits before choosing either board for modifications.
It's a tie
- Both keyboards list 1000 Hz polling and 2.4 GHz, wired, and Bluetooth connectivity.
- The AULA uses linear switches, while the Keychron offers linear, tactile, and clicky switch options.
- Both list N-Key Rollover.
What owners say
Ratings and quotes collected from verified store reviews, including the critical ones.
AULA F75 Ultra
3 owner reviews
“Keyboard sounds nice, works nice, the software is a bit of an issue to set up as there aren't any proper instructions but you just need the drivers and the VIA app.”
Keychron K3 Max
16 owner reviews
“Noce keyboard, i appreciate the level of customization QMK provides. One thing was little disappointing - the tactile feeling comparing to K3. Other than that its very good kb!”
“I sold my k3 pro and got this. The one I got drops connection intermittently or doesn't type or respond right away. It sounds nice, but stiff reds are not as pleasant to type on as previous keyboards reds. I really thought I ordered hotswap RGB max but seems…”
AULA F75 Ultra vs Keychron K3 Max specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
17 of 28 specs differ
AULA F75 Ultra
Keychron K3 Max
Switch options
Hot-swappable
Mount style
Low profile
Sound dampening
Screw-in stabilizers
Layout size
Layout standard
Ergonomics
Knob
Display
Media keys
Connection
Max polling rate
Battery
USB-C
Case material
Plate material
Keycaps
Weight
Dimensions
Typing angle
Backlight
QMK
VIA
N-key rollover
Mac & Windows
Released
ISO layouts by store
Which stores sell ISO-DE, UK, and the other regional layouts.
AULA F75 Ultra
No ISO layout at the stores we track.
Keychron K3 Max
Input Gear
ISO-DE
Out of stockShips to you
Keychron
ISO-DE, ISO-UK, ISO-Nordic, ISO-SW
Out of stockShips to you
Keychron (DE)
ISO-DE, ISO-UK, ISO-SW
In stockDoes not ship to you
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 F75 Ultra vs Keychron K3 Max: your questions
The AULA F75 Ultra uses a gasket mount, a flex-cut polycarbonate plate, and five vendor-described sound-damping layers. The Keychron K3 Max is a low-profile keyboard with QMK support and multiple ISO layout options.
The AULA F75 Ultra lists a 10000mAh battery, while the Keychron K3 Max lists a 1550mAh battery. Battery capacity alone does not establish how long either keyboard will last in a particular setup.
Both list 1000 Hz polling and wired, 2.4 GHz, and Bluetooth connectivity. The AULA is listed with linear switches, while the Keychron offers linear, tactile, and clicky options.
The Keychron K3 Max is listed at 580g, while the AULA F75 Ultra is listed at 1100g. The Keychron's listed dimensions are also smaller, and its design is described as low-profile.
Yes, the AULA F75 Ultra lists VIA support, and its vendor describes VIA customization for macros and dual-function layer keys. The vendor also describes hot-swapping switches without soldering.
Yes, the Keychron K3 Max lists both QMK and VIA support. Keychron describes its Launcher web app as supporting key remapping and macros.
No, the Keychron K3 Max compatibility rules specify low-profile switches and keycaps only. Standard MX keycaps will not fit.
The AULA F75 Ultra is listed as ANSI-only, with no ISO variants offered. The Keychron K3 Max lists ANSI and ISO options including ISO-UK, ISO-DE, ISO-Nordic, and ISO-SW.
Both list hot-swappable switches. Keychron specifies compatibility with low-profile Gateron and Keychron mechanical switches, while AULA's vendor says the F75 Ultra supports 3-pin and 5-pin mechanical switches.
The Keychron K3 Max has north-facing LEDs, and its compatibility rules warn that Cherry-profile keycaps can hit the switch housing. Check keycap clearance before choosing that profile.
Both list Bluetooth and 2.4 GHz wireless, as well as a wired connection. The AULA lists a 1000 Hz polling rate, and the Keychron vendor specifies 1000 Hz in 2.4 GHz and wired modes.
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