Prototype

AFOUR

DesktopPolyphonic

Instantly spark creativity with a synthesizer that boots up in a flash, ready to capture your ideas before they vanish. The AFOUR delivers polyphonic expression across four dedicated channels, fueled by 27 velocity-sensitive keys that respond with nuance to every touch.

Dive into hands-on sound design with 44 precise knobs at your fingertips, a versatile mod matrix for deep routing, and a built-in arpeggiator plus looper to layer evolving patterns effortlessly. Full MIDI In/Out/Thru and USB connectivity make it a seamless hub in any studio setup.

Craft everything from intricate textures to driving rhythms on this desktop keyboard powerhouse, blending immediate playability with professional control.

Announced

2026

Status

Prototype

Synthesizer

Format

Desktop

Voice

Polyphony

Polyphonic

Workflow

Arpeggiator

Yes

Mod Matrix

Yes

Memory

Expression

Velocity

Yes

Additional

44 knobs, instant boot time, 27 velocity sensitive keys, 4 channels, looper

I/O

MIDI

In, Out, Thru

Ports

USB

Wi-Fi

Last updated May 7, 2026

Apæron

apaeron.com

Malmö, Sweden

Apæron is a Swedish synthesizer manufacturer that debuted at Superbooth 2026 with the AFOUR, a knobby polyphonic desktop synthesizer featuring two oscillators and A4-sized form factor. The company was established to challenge the design norms of modern hardware instruments by blending extensive, highly tactile hardware controls with a completely digital, unapologetic sonic architecture. Apæron operates on a "no menu-diving" design philosophy. They focus on giving performers direct, immediate access to all voice and synthesizer parameters via physical hardware controls. Instead of utilizing generic off-the-shelf components, Apæron designs its specialized hardware completely from scratch. This custom engineering includes their proprietary magnetic gaming-switch keyboard, custom-molded endless encoders, and dedicated visual feedback LED rings.

AFOUR

Specs