Keychron S1 QMK/VIA low-profile custom mechanical keyboard with 75% layout for Mac Windows Linux and low profile Gateron switch red
Keychron S1 QMK/VIA low-profile custom mechanical keyboard with 75% layout for Mac Windows Linux and low profile Gateron switch blue
Keychron S1 QMK/VIA low-profile custom mechanical keyboard with 75% layout for Mac Windows Linux and low profile Gateron switch brown
Keychron S1 QMK/VIA low-profile custom mechanical keyboard with 75% layout hot-swappable and low profile Gateron switch red
Keychron S1 QMK/VIA low-profile custom mechanical keyboard with 75% layout hot-swappable and low profile Gateron switch blue
Keychron S1 QMK/VIA low-profile custom mechanical keyboard with 75% layout hot-swappable and low profile Gateron switch brown

Keychron S1 QMK Custom Mechanical Keyboard

Regular price Sale price $109.00
/
186 in stock

Version
Switch Type
Switch Option

The fully assembled version includes:

  • Full CNC aluminum body, steel plate, and PCB
  • Low profile Double-shot PBT LSA (low profile spherical-angled) keycaps (including Mac & Windows keycaps).
  • Gateron low profile mechanical switches.

Please drop your email on "Notify Me When Available" if the product model is out of stock

No discount code can be used for the S1.

Customer Reviews

Based on 1 review
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A
A.M.
Neat Little Keyboard

Overall I've been very happy with this keyboard, after using it for a few days now. For context, I ordered this keyboard with Gateron Blue switches. Stock the keyboard is great. Good build quality and feels very sturdy, the stock keycaps are nice, and the size of the board is great for a smaller desk. Only gripe on build quality is the USB-C port on the keyboard, mine wobbles a bit but the cable is secure.

After a few days of using it I couldn't stand the Gateron Blue's anymore. I ordered the switches to try out click jacket switches since I've only used the Kailh Box Whites/Pinks previously, which I loved, but the Blue's clicks are just too high pitched and annoying for me. I swapped over to Gateron Browns, which I find a lot more enjoyable on this board.

Speaking of swapping switches, this board was pretty easy to swap switches on. No major issues and switches came out & went back in easily. I also opened up the board, since I wanted to see the insides, and it's not too hard to disassemble (screws are behind keycaps, making it more difficult to disassemble). I applied the Tempest Tape mod to the keyboard and overall enjoyed how it affected the sound. Only note of caution if anyone else does the tape mod is to watch-out for the stabilizers, as the tape will cause the stabs to stick due to the stab design poking out the back when depressed.

The only other thing I could want from this board is quality shine-through keycaps, since it's something I'm used to having on my boards, but I have a set of XVX keycaps on order.

In the end I rate this keyboard a solid 5/5 in my mind, assuming you want a low profile keyboard and don't want/need wireless. I plan on using this keyboard as my daily driver at home for a few months, instead of my GMMK PRO with Kailh Box White V2's, and see how I like it for my personal computer. If I don't like it more than the GMMK PRO I plan on taking it into work, since it's more than quiet enough for my work environment.

Keychron S1 75% Ultra-slim Low Profile Custom Mechanical Keyboard

Keychron S1

Keychron S1 is the first 75% layout all-metal low profile custom mechanical keyboard. With its all-metal ultra-slim CNC machined body, QMK/VIA support, and low profile double-shot PBT keycaps, the S1 gives you a high-end typing experience, a unique design setup, and endless possibilities. One of a kind.

Keychron S1 75% Ultra-slim Low Profile Custom Mechanical Keyboard
Keychron S1 75% Ultra-slim Low Profile Custom Mechanical Keyboard
Features of Keychron S1 75% Ultra-slim Low Profile Custom Mechanical Keyboard
Customize Your S1

Choose the switches and more accessories for your S1

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Full Metal and Ultra-Slim Body

It’s incredible to make such a slim keyboard with a solid piece of aluminum. The whole body of the keyboard is processed through CNC machined, polished, anodized, sandblasted, and undergoes 24 more manufacturing stages to make the S1 slim, elegant and solid. 

Keychron S1 75% Ultra-slim Low Profile Custom Mechanical Keyboard

A Customizable Low Profile Keyboard

To build a customizable low profile keyboard, we designed every part that is easy to assemble. Therefore, you can customize and adjust each component if you want.

Keychron S1 75% Ultra-slim Low Profile Custom Mechanical Keyboard
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Keychron S1 75% Ultra-slim Low Profile Custom Mechanical Keyboard

An Epic Core Inside The Keyboard

A  powerful MCU ARM structure that is armed with 128K Flash provides more flexibility for developers. The polling rate is 1000 Hz out of the box, which makes latency non-existent for the competitive game.

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Low Profile Double-Shot PBT Keycaps

We created a new low profile double-shot PBT keycaps set for the S1. The PBT keycaps will provide excellent oil resistance, enhance the type feel, and prevent the legends from fading.

Keychron S1 75% Ultra-slim Low Profile Custom Mechanical Keyboard
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Keychron S1 75% Ultra-slim Low Profile Custom Mechanical Keyboard

Switch Layouts Between macOS & Windows

Built with the Mac users’ experience in mind while still retaining compatibility for Windows devices, the Keychron S1 comes with a system toggle and an additional set of customized keycaps for both Windows and macOS systems. You can now save two different layouts on the keyboard, one for each system.

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Adjustable In Two Angles

The S1 has two extra feet that allow you to adjust the tilt angle of the keyboard. One is 3°, and another is 6°, enabling you to find the most comfortable angle for your wrist.

Keychron S1 75% Ultra-slim Low Profile Custom Mechanical Keyboard
Keychron S1 75% Ultra-slim Low Profile Custom Mechanical Keyboard
Keychron S1 75% Ultra-slim Low Profile Custom Mechanical Keyboard

Compatible With Low Profile, XDA, And DSA Keycaps

We designed the stems of switches and stabilizers in the same straight line, so more keycaps can also be compatible with the S1. It gives you a more personalized choice. If you choose keycaps for the S1, we suggest using low profile keycaps or relatively thin keycaps such as XDA and DSA.

Program S1 With QMK & VIA

With full QMK and VIA support, you can easily program and remap each key on the keyboard. The open-source firmware means endless possibilities for keyboard layouts, shortcuts, backlight effects,  and more. 

Get The S1 Keymap Working On VIA

Since the VIA code for the S1 is still awaiting approval from Github, it is not yet automatically recognized, you will need to manually download and import the S1 keymap.

To get started, please follow the steps: Download the appropriate keymap JSON file below, open VIA, turn on "Show Design tab" on "Settings" tab, and drag the JSON file into the “Design” tab on VIA to get the S1 keymap working on VIA.

S1 Keymap JSON Files

Hot-swappable (Option)

The hot-swappable sockets are mounted on the PCB, so you can install or change the switches without soldering. The PCB only supports Gateron low profile mechanical switches.

22 RGB Light Effects

Comes with up to 22 types of RGB backlight effects, you can choose the one fit your mood. And you can further fine-tune the RGB hue, saturation, brightness, effect speed with ease.

Gateron Low Profile Mechanical Switch

The optimized molded Gateron low profile MX Mechanical switch is designed to enhance reliability. Gateron's reputable switches are your best choice for a precise, smooth, and reliable fingertip feel, whether you prefer linear (red), clicky (blue), or something in between (brown).

Gateron Low Profile Switch Features

What's in the box?

Keychron S1 75% Ultra-slim Low Profile Custom Mechanical Keyboard

Specs

Width118.4 mm
Length310.4 mm
Front Height7.8mm  (without keycaps)
Back Height13.7 mm (without keycaps)
Feet Height2.7 mm
Angle3° / 6°
Weight960 g ± 10g 
Body MaterialFull CNC machined aluminum
Plate MaterialSteel
Polling Rate1000 Hz
Keycaps Double-shot PBT low profile keycaps, not shine-through
MCUUltra-low-power ARM Cortex-M4 32-bit STM32L432 (128KB Flash)
SwitchesGateron Low Profile MX Mechanical
BacklightNorth-facing RGB LED
Switch SupportHot-swappable (Gateron Low Profile MX Mechanical)
StabsPlate stabs
ConnectivityType-C
CableType-C cable + Type-A to Type-C adapter
Operating Environment-10℃ to 50℃
Keychron S1 User Guide

Learn more about the Keychron S1 such as the S1 shortcuts, assembling the S1, factory reset, and more in the FAQ section.

Customer Reviews

Based on 1 review
100%
(1)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
A
A.M.
Neat Little Keyboard

Overall I've been very happy with this keyboard, after using it for a few days now. For context, I ordered this keyboard with Gateron Blue switches. Stock the keyboard is great. Good build quality and feels very sturdy, the stock keycaps are nice, and the size of the board is great for a smaller desk. Only gripe on build quality is the USB-C port on the keyboard, mine wobbles a bit but the cable is secure.

After a few days of using it I couldn't stand the Gateron Blue's anymore. I ordered the switches to try out click jacket switches since I've only used the Kailh Box Whites/Pinks previously, which I loved, but the Blue's clicks are just too high pitched and annoying for me. I swapped over to Gateron Browns, which I find a lot more enjoyable on this board.

Speaking of swapping switches, this board was pretty easy to swap switches on. No major issues and switches came out & went back in easily. I also opened up the board, since I wanted to see the insides, and it's not too hard to disassemble (screws are behind keycaps, making it more difficult to disassemble). I applied the Tempest Tape mod to the keyboard and overall enjoyed how it affected the sound. Only note of caution if anyone else does the tape mod is to watch-out for the stabilizers, as the tape will cause the stabs to stick due to the stab design poking out the back when depressed.

The only other thing I could want from this board is quality shine-through keycaps, since it's something I'm used to having on my boards, but I have a set of XVX keycaps on order.

In the end I rate this keyboard a solid 5/5 in my mind, assuming you want a low profile keyboard and don't want/need wireless. I plan on using this keyboard as my daily driver at home for a few months, instead of my GMMK PRO with Kailh Box White V2's, and see how I like it for my personal computer. If I don't like it more than the GMMK PRO I plan on taking it into work, since it's more than quiet enough for my work environment.