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Atmegatron

DesktopDigitalMonophonic

Built on a single AVR microcontroller chip, this compact 8-bit monosynth delivers a wildly characterful wavetable PWM synthesis engine that's as hackable as it is fun to tweak live.

Two digital oscillators offer 32 waveforms from classic shapes to glitchy oddities like Duh Dugga, with independent frequency knobs for detuning from -12 to +12 semitones, sync, pulse width modulation, and mixing with noise or XOR ring mod. Modulation comes from two LFOs with 16 waveforms that sync to MIDI clock, two ADSR envelopes, and sample & hold, routing to pitch, filter cutoff from 15 types, amplitude, and phase for phaser-like effects. Hands-on front-panel controls cover everything intuitively, including wave crusher, phaser, distortion, arpeggiator, and a 6dB analog bass boost before the mono 1/4-inch output, with MIDI I/O, headphone jack, and a programmer header for swapping synth engines via overlays and librarian software—storing 16 patches in RAM. Physically, it's a slim, sturdy desktop unit powered by a 12V supply, perfect for performers who want gritty, retro digital tones without menu-diving.

Players love its immediate tweakability and unique lo-fi snarls that cut through mixes, though some note the monophonic limit keeps it focused on leads and basses rather than chords. It's a standout in the chiptune-inspired synth world for hackers seeking expandable weirdness.

Released

2014

Status

Discontinued

Synthesizer
Format
Desktop
Type
Chiptune, Wavetable
Internal Battery
No
Voice
A/D
Digital
Polyphony
Monophonic
Oscillators
1
Oscillator Type
Wavetable
Voices
1
Filter
Multimode
Envelopes
2
LFO
2
Effects
Wave Crusher, Phaser, Distortion
Expression
Aftertouch
No
Velocity
No
MPE
No
Additional
-
Software
-
I/O
Audio In
-
Audio Out
1x 1/4" mono
Headphone
1x 1/8" mini-jack
MIDI
In, Out
MIDI Type
DIN (5-pin)
Ports
-
Wi-Fi
No
Workflow
Arpeggiator
No
Sequencer
Yes
Mod Matrix
No
Memory
16 Patches RAM
Measurements
Dimensions
-
Weight
-
Last updated Mar 22, 2026