Keychron K2 Ultra vs Azio Retro75% vs Typewriter
Choose the Keychron K2 Ultra for compact wireless performance and customization, or the Azio Retro for its distinctive round clicky keys and integrated wrist rest.
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from$119at MK
Which one should you get?
Get the
Keychron K2 Ultra
75%
Build quality in the top 10% of 75% boards under $150.
- 75% layout with a listed weight of 1084 g and dimensions of about 312 x 122 mm.
- Bluetooth, 2.4 GHz and wired connectivity, with an 8000 Hz polling rate in wired and 2.4 GHz modes.
- Hot-swappable switches, with Keychron Apex Red, Brown and Banana options listed by the vendor.
- South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
Get the
Azio Retro
Typewriter
- Vintage typewriter-inspired design with handcrafted round keys and chrome trim described by Azio.
- Tactile, clicky Blue switches and N-key rollover via USB.
- Integrated wrist rest, plus adjustable rear pillar-style feet.
- No ISO layout. ISO-DE, UK, and other ISO variants are not offered.
For a compact keyboard that supports multiple connection modes, key remapping and switch changes, choose the Keychron K2 Ultra. Pick the Azio Retro if its round clicky keys, integrated wrist rest and vintage styling are the priority, and its ANSI-only layout suits your needs.
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.
Keychron K2 Ultra
Azio Retro
Connection
Bluetooth, 2.4 GHz, Wired
Bluetooth, Wired
Wireless for several devices and wired for lower latency
Weight
1,084 g
1,587 g
Heavier boards stay planted and lighter ones travel
QMK
Yes
No
The deep option when you want to remap every key
VIA
Yes
No
GUI remapping without compiling firmware
Sound dampening
Yes
No
- Keychron K2 Ultra
- Azio Retro
- Performance
- 9054
- Build quality
- 8648
- Productivity
- 9451
- Customizability
- 9251
- Portability
- 8250
- Hot-swappable
What will you mostly use it for?
The K2 Ultra takes the lead across the listed use cases, with the clearest advantages in connectivity, compact dimensions and customization. Its wireless polling specification and remapping features are especially relevant for gaming and programming. The Azio Retro's strongest appeal is its distinctive typing and design experience, supported by clicky round keys and an integrated wrist rest. Choose it when those features matter more than portability or layout flexibility.
Pick the Keychron K2 Ultra
- The K2 Ultra specifies an 8000 Hz polling rate over wired and 2.4 GHz connections.
- Its 75% layout is more compact than the Azio Retro's 455 mm-wide body.
- The Azio vendor describes tactile, clicky Blue switches, but its listing specifies N-key rollover via USB only.
Keychron K2 Ultra vs Azio Retro specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
12 of 25 specs differ
Keychron K2 Ultra
Azio Retro
Switch options
Hot-swappable
Mount style
Sound dampening
Screw-in stabilizers
Layout size
Layout standard
Ergonomics
Display
Media keys
Connection
Max polling rate
Battery
USB-C
Case material
Plate material
Keycaps
Weight
Dimensions
Backlight
QMK
VIA
N-key rollover
Mac & Windows
Released
ISO layouts by store
Which stores sell ISO-DE, UK, and the other regional layouts.
Keychron K2 Ultra
Keychron (DE)
ISO-FR, ISO-ES, ISO-IT
In stockDoes not ship to you
Azio Retro
No ISO layout at the stores we track.
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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Keychron K2 Ultra vs Azio Retro: your questions
The K2 Ultra is the more gaming-focused choice based on its 8000 Hz polling rate over wired and 2.4 GHz connections. The Azio Retro's vendor listing specifies N-key rollover via USB and tactile, clicky Blue switches.
Yes. The K2 Ultra supports Bluetooth, 2.4 GHz and wired connections, and its vendor lists up to 760 hours of use with backlighting off.
The product metadata lists Bluetooth and wired connectivity. Azio's vendor description also specifies a USB connection and a 6 ft braided cable.
The K2 Ultra has a 75% layout and measures about 312 x 122 mm. The Azio Retro measures 455 x 147 mm, making it the larger of the two by listed dimensions.
The Azio Retro is listed with an ANSI layout, and ISO-DE, UK and other ISO variants are not offered. The K2 Ultra is listed in several ISO variants as well as ANSI.
Both keyboards are listed as hot-swappable. The K2 Ultra vendor description names Apex Red, Brown and Banana switch options, while Azio describes the Retro's Blue switches as tactile and clicky.
Yes. Keychron says its Launcher web app supports key remapping and macros, with ZMK firmware powering customization. The Azio Retro description mentions media and hot keys but does not describe macro programming.
Both are listed with Mac and Windows support. Keychron also lists Linux compatibility for the K2 Ultra, while Azio specifies Windows 10 and newer in its vendor description.
No, its listing specifies no backlight. The K2 Ultra has south-facing RGB backlighting, and Keychron describes per-key RGB customization.
The Azio Retro is listed with an integrated wrist rest. Keychron does not list an integrated wrist rest for the K2 Ultra.
The K2 Ultra's compatibility note says south-facing LEDs can leave shine-through legends dark. It also warns that some sculpted keycaps can clip the LED.
The K2 Ultra is lighter at 1084 g, compared with 1587 g for the Azio Retro, and its 75% layout is narrower. It also supports Bluetooth and has a vendor-stated battery life of up to 760 hours with backlighting off.
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