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Juno-Di

KeyboardDigitalPolyphonic

Back in 2009, this synth arrived as a game-changer for gigging players, doubling the polyphony and waveform memory of its predecessor to deliver massive, lush sounds in a featherweight package that runs on batteries.

At its core is a sample-based wave engine with 64 MB of waveforms across 839 tones, powering 128-voice polyphony and 16-part multitimbrality, complete with 4 TVF filters, ADSR envelopes, and 2 LFOs per tone for dynamic shaping. You'll find 79 multi-effects, 3 chorus types, 5 reverbs, plus a built-in vocoder and mic input with dedicated reverb—perfect for live vocal twists. Hands-on tweaks come via five Sound Modify knobs for envelope attack/release, filter cutoff/resonance, and reverb, alongside a D-Beam for gesture control, pitch/mod wheel, and split/dual modes on its 61 velocity-sensitive synth-action keys. It's ultra-portable at just 5.2 kg, with USB for song playback (MP3/WAV/SMF), memory storage, and a simple LED display, plus MIDI I/O and stereo outs.

Players have long praised its vast, gig-ready sound palette and road-tough build, though some note the front-panel editing stays surface-level, best paired with the included PC/Mac editor for deeper dives.

Released

2009

Status

Discontinued

Synthesizer
Format
Keyboard
Type
Sample-based, Subtractive
Internal Battery
Yes
Voice
A/D
Digital
Polyphony
Polyphonic
Oscillators
-
Oscillator Type
-
Voices
128
Filter
Yes
Envelopes
-
LFO
2
Effects
79 Multi-effects plus 3 Chorus types and 5 Reverb types
Expression
Aftertouch
No
Velocity
Yes
MPE
No
Additional
-
Software
-
I/O
Audio In
1x XLR Mic (with reverb and vocoder)
Audio Out
1 stereo 1/4" TRS
Headphone
1x 1/4" TRS
MIDI
In, Out
MIDI Type
DIN (5-pin), USB
Ports
USB, Sustain Pedal, Expression Pedal
Wi-Fi
No
Workflow
Arpeggiator
Yes
Sequencer
No
Mod Matrix
-
Memory
1082 Preset + 256 (GM2) + 128 User Patches, 20 Preset + 9 (GM2) + 8 User Rhythm Sets, 64 Preset + 64 User Performances. USB Memory Stick storage capability.
Measurements
Dimensions
1008 x 300 x 104 mm
Weight
5.2 kg
Last updated Mar 21, 2026