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Theseus 75 Mechanical Keyboard

$564.00 USD

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Color: Apollo

PCB: Hotswap

Hotswap Solder

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A balanced 75% split mechanical keyboard kit.

Although the “endgame” board may be a myth, this one might come close. Meet the Theseus75: a balanced 75% split mechanical keyboard kit designed by @haverworks. With magnetic interlocking, a LEMO-compatible interconnect, and a cushioned typing feel not often found in splits, the Theseus sports a unique combination of features that set this board apart from the rest. The best part? It’s the first split keyboard we know of to include integrated USB hub passthrough—perfect for connecting your mouse, macropad, or other peripheral companion. All these features fit behind a clean, unassuming aesthetic meant to be the perfect backdrop for any keycap set. With almost a dozen different colorways to choose from, you’re sure to find one that compliments your setup.

Resources: Build Guide, Firmware, Keymap

Specifications

MEASUREMENTS

6° typing angle
20mm front height
36.6mm total height (case bottom to top)
Kit content weight: 6.44 lbs (2.923 kg)

LAYOUT

75% XT (single macro column)
Switches: 88-91
Stabilizers: 3-5 (2U)
Exploded navigation cluster
Two 1U rotary encoders

PCB

Designed by ebastler
QMK firmware w/ VIA support
RGB LED underglow
Caps lock LED (with VIA customization support)
Integrated USB 2.0 hubs
Dual-role USB-C ports (either port can function as hub or host connection)
Alps EC11 encoders w/ 1.5mm push travel
STM32G431 microcontrollers
uDB S1-inspired form-factor daughterboards
1.6mm black-core FR4, ENIG finish

MATERIALS

6063 aluminum frame w/ anodized or electrophoretic finish
Polycarbonate base w/ frosted finish
PVD coated brass knobs w/ gold, black, or chroma (rainbow) finish
Aluminum knob mounts
PORON gaskets and switch pads

Plates:

Black-core FR4, ENIG finish (included)
5052 aluminum, anodized black
Brass
Polycarbonate, clear
POM, black
Carbon fiber

Silicone Parts:

50A and 70A grommets
70A knob mount O-rings
50A friction-fit feet (no adhesive required)

What's in the box?

Keyboard case (aluminum frame + polycarbonate base)
PCBs & daughterboards
Flat flexible cables (FFCs) for daughterboards
LEMO-compatible panel-mount connectors w/ cable
LEMO-compatible interconnect cable
FR4 plate
PORON plate gaskets
PORON switch pads
Magnets
Knobs
Knob mounts
Knob mount set screws
Knob mount silicone o-rings
Friction-fit silicone feet (1 set black + 1 set white)
Silicone grommets (1 set 50A (blue) + 1 set 70A (purple))
Grommet screws
Daughterboard screws
Case screws
Magnet screws
Plate standoffs and screws
Assorted tools
Custom carrying case

Regional Retailers

US: Dangkeebs
Canada: Deskhero
UK: Proto[Typist]
EU: KEYGEM
Oceana: ALL CAPS
Philippines: Zion Studios
Singapore: iLumkb
Vietnam: MOKB Store

China: zFrontier

A balanced 75% split mechanical keyboard kit.

Although the “endgame” board may be a myth, this one might come close. Meet the Theseus75: a balanced 75% split mechanical keyboard kit designed by @haverworks. With magnetic interlocking, a LEMO-compatible interconnect, and a cushioned typing feel not often found in splits, the Theseus sports a unique combination of features that set this board apart from the rest. The best part? It’s the first split keyboard we know of to include integrated USB hub passthrough—perfect for connecting your mouse, macropad, or other peripheral companion. All these features fit behind a clean, unassuming aesthetic meant to be the perfect backdrop for any keycap set. With almost a dozen different colorways to choose from, you’re sure to find one that compliments your setup.

Resources: Build Guide, Firmware, Keymap

Introducing the Theseus75 Keyboard

The Theseus75 is a premium 75% split mechanical keyboard that packs a plethora of unique features into a classic, balanced design.

Introduces a new

Hybrid mounting system

Combines silicone grommets and slow-rebound foam gaskets to achieve a balanced intersection between sound and feel.

Specially-designed silicone grommets snap gently into the sides of each switch plate, helping to align, secure, and suspend the assembly.

Color-coded by durometer and slotted for optional screws, you can choose between a soft or firm typing experience—whatever suits your style.

Design challenge:

The split problem

To create the enclosure, many split keyboards rely on the plate resting directly against the case itself. This contact can create unwanted resonance and resistance, negatively affecting the overall sound and feel.

The Theseus solves this by having the plate foam pull double-duty: by resting against the inner polycarbonate walls, this extra-soft, slow-rebound foam creates a gasket between the plate and case—protecting the PCB, improving acoustics, and evenly cushioning your keystrokes.

Friction-fit knob mount

Each knob is secured with a precise friction fit, obscuring any unsightly screws and making it easy to swap in other colorways or custom knobs.

01

Perfect for peripherals

With integrated USB hubs, you can conveniently connect your numpad, mouse, flash drive, security key--even your phone⚡

02

...on either side.

Either side can function as the hub, no matter which one connects to your computer. We don't know of any other split keyboard that can do this.

03

Or as a side on its own.

Perfect for when all you need is W, A, S, and D.

01

Perfect for peripherals

With integrated USB hubs, you can conveniently connect your numpad, mouse, flash drive, security key--even your phone⚡

02

...on either side.

Either side can function as the hub, no matter which one connects to your computer. We don't know of any other split keyboard that can do this.

03

Or as a side on its own.

Perfect for when all you need is W, A, S, and D.

RGB
underglow

You can't use solid slabs of frosted polycarbonate and not let a little light shine through.

Supports the full gamut of QMK matrix lighting effects.

RGB
underglow

You can't use solid slabs of frosted polycarbonate and not let a little light shine through.

Supports the full gamut of QMK matrix lighting effects.

Reviews - Don't just take our word for it

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Theseus 75 Mechanical Keyboard