We make musical gadgets.

Ettin, a two-headed pulse voice: in development. Follow the build.

Ettin

You already know this sound. You met it cross-legged on the carpet, an inch away from the TV. As you traversed the overworld, plumbed the depths of countless dungeons, or left the machine on during an all-nighter, the tones were etched into your memory. Ettin puts that voice in your rack.

Inside the NES, the Ricoh RP2A03 (RP2A07 for PAL people) had two pulse channels, and they carried most of the melodies you still hum. Ettin gives you both in a single 12HP panel. An ettin is a perpetually cranky giant with two heads sharing one body. So, each head gets its own V/oct input, its own gate, and duty cycle. They share the envelope and the bitcrusher. They can sing in harmony, or argue across the stereo field.

Don't expect smooth, polite analog pulses. Each voice has the console's traditional four fixed duty cycles (12.5%, 25%, 50%, 75%) on two switches. Hollow, nasal, brash or square. Pick a character, or let Duty CV pick for you.

Behind the oscillators is a shared percussive envelope. Gate either head, and set decay from a single knob. Crush it on the way out, with a CV input for turning clean chip tones into gravel on demand.

Ettin does one thing: your first console, but patchable.

Features & Specs

Size
12 HP
Voices
Two pulse, four duty cycles each
CV in
V/oct and gate per voice, duty, crush
Out
One per voice
Ships
Assembled or DIY kit
Status
In development
Ettin Dual Pulse Voice front panel: two duty knobs, two tune knobs, decay and crush, and eight jacks.
This mockup is out of date already. The real one will be way more metal \m/.

Summon the Muse

There is a muse living in you. A well of creativity that belongs to you and nobody else. You two should meet. We hear they're pretty awesome.

Every creative person is an antenna, and the instrument is the ritual apparatus. We are aware of how that sounds. The ritual is mostly play, and sometimes there is something magical.

Signal Ritual Instruments was founded in 2026 by a 27 year veteran of the game industry, in the frozen prairie wastes of Edmonton, Alberta, Canada.

Journey Onward!

Ettin's first run will be pretty small. The waitlist gets the feed along the way. One more email when the run opens.

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