kroma kl-75 monolith
a mechanical keyboard you can hear before you buy it.
typed on the board below. now you try.type anything. it lands on the board below.
KL-75 Monolith: a 75% keyboard (every key but the number pad), machined from one block of aluminum. Press any key to hear it.Tap any key to hear it.
© 2026 HVNF Studios · do not redistribute
hear the difference
Pick a switch and type: every key you press plays it, synthesized live in your browser. No recordings, nothing sent anywhere. A switch is the small spring-loaded part under every key. It decides how a press feels and how it sounds.
- switch
- Tactile Topaz, tactile
- spring
- 62 g actuation, 18 mm gold-plated
- stem
- POM, bump-tuned leg
- housing
- PC top / nylon bottom
- travel
- 3.8 mm, bump at 0.6 mm
- loudest
- 600–1,200 Hz
tactile: a small bump halfway down, so you feel each press.
test keys
press 1, 2 or 3 to switch · your own keys play while this is on screen
what you hear is synthesized live in your browser from each switch's profile.
press a key to measure it
Target sentence: the quick brown fox jumps over the lazy dog.
— wpm
what's inside
Six layers, stacked like a sandwich. Keep scrolling and we'll take it apart, one layer at a time.
keycaps
82 × PBT, dye-sublimated legends
82 keycaps in thick PBT, a hard, matte plastic that won't go shiny. The letters are dyed in, so they never wear off.
switches
82 × MX-style: linear, tactile or silent
82 switches, one under each key: a spring and a stem in a small housing. This is what clicks when you press.
plate
FR4, 1.2 mm, flex-cut · 12 × Shore 20A urethane gaskets
Twelve foam gaskets hold the plate between the top frame and the case. No screw touches it, so each keystroke sinks into foam instead of ringing through the aluminum. That's where the deep, soft sound comes from.
circuit board
1.6 mm FR4, hot-swap · QMK / VIA · 1000 Hz · USB-C
Sockets on the circuit board take any standard MX-style switch. Change the sound of the whole board in minutes, with no soldering iron.
brass weight
620 g C360 / 0.8 µm PVD coat
A 620 g polished brass weight sits 4 mm above the desk. It pulls the balance of the board under the home row and adds depth to every keystroke.
case
6063-T6 billet · ±0.02 mm · Type II anodize
It starts as a 4.6 kg block of aluminum and leaves the mill at 1.52 kg, cut to within ±0.02 mm on every face that meets another.
the numbers
Measured on the first production case. Every KL-75 ships with its own inspection card listing the measured flatness of the plate shelf.
1.52kg
The case alone. It starts as a 4.6 kg block of aluminum.
±0.02mm
How closely every mating face is cut: about a quarter of a hair's width.
7.2°
The typing angle is machined into the case, so there are no feet to flip out.
82keys
A 75% layout: every key but the number pad, packed tight.
case
- Material
- 6063-T6 aluminum, machined from one solid block (billet)
- Mating-face tolerance
- ±0.02 mm
- Finish
- Type II anodize, 20–25 µm
- Typing angle
- 7.2°
- Front height
- 18.5 mm
size and weight
- Footprint
- 334.0 × 148.8 mm
- Case mass
- 1.52 kg
- Built mass
- 2.48 kg with switches and keycaps
- Brass weight
- 620 g C360 brass, mirror PVD
mounting and sound
- Mount style
- Gasket, 12 × urethane foam (Shore 20A)
- Plate
- Leaf-spring FR4, 1.2 mm, flex-cut
- Dampening
- Case foam, PE sheet, IXPE switch pad
- Tuning options
- Plate foam in / out, O-ring gasket kit
electronics
- PCB
- 1.6 mm FR4, hot-swap, south-facing sockets
- Firmware
- QMK / VIA
- Connection
- USB-C, 1000 Hz polling
- Layouts
- 75% ANSI, 75% ISO
build yours
Pick a case, keycaps and a switch: you'll hear the switch as you choose it. $640, ships in about 3 weeks. The order is a demo: nothing is charged or sent, and you get a printed ticket.