PX SunBox: Analog-Digital Hybrid Synth Plugin by UVI

Rated 4.7/5 on Plugin Boutique (38 ratings)

PX SunBox is a software synth plugin from UVI that recreates the hardware tones of the SunSyn, an 8-voice analog-digital hybrid synthesizer. It includes over 450 editable presets built from 30,660 hardware samples.

WindowsmacOS64-bit

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01Overview

PX SunBox brings the sound of a complex hybrid synthesizer into a software instrument. The developer models the SunSyn, a German hardware design from 1999 that combines analog oscillators and filters with digital wavetable-style oscillators. The plugin focuses on the instrument's character, with a library of presets and a flexible architecture for building patches and layered tones from scratch.

Best for

Polysynth pads
Monophonic bass sounds
Layered lead tones
Sweeps and FX
Plucks and percussive sounds

Developer: UVI
Category: Synths
Store: Plugin Boutique

02Key features

What you get

Dual-layer architecture for combining sounds into layered tones
Over 450 editable presets built from hardware samples
Library of 30,660 authentic hardware samples
Multimode filters with envelope and poly or mono modes
Two arpeggiators plus LFO and step modulators
3-band EQ with sweepable crossover and built-in effects
Runs on Windows and macOS in 64-bit

03In depth

Sound Design With a Dual-Layer Synth Architecture

PX SunBox offers a deep toolset for creating and editing patches. The dual-layer architecture lets you combine any of the included sounds into layered tones. Each layer includes ADSR amp envelopes, multimode filters with envelope, and poly or mono modes with glide.

Pitch shifting and advanced stereo modes are available, along with handy modwheel mappings. LFO and step modulators add movement, and two arpeggiators are included for rhythmic patterns.

The effects section includes a 3-band EQ with sweepable crossover, drive, Thorus, ensemble, Phasor, digital delay and Sparkverb.

Preset Library and Sound Categories

The plugin includes over 450 new and custom-designed presets built from a library of 30,660 authentic hardware samples. Categories cover Bass, Bells, Brass, FX, Keys, Leads, Organ, Pads, Percussive, Plucks, Polysynth, Strings, Sweeps and Voices, along with Waveform Analog and Waveform Digital sets.

All presets are fully editable, so you can customize them or use them as starting points for your own sounds.

04Specs

Will it run?

Formats, systems and requirements as listed by Plugin Boutique. Missing details are left out, not guessed.

Developer	UVI
Type	Plugin
Category	Synth
Operating systems	Windows, macOS
Architecture	64-bit

05FAQ

Questions, answered

What is PX SunBox?

PX SunBox is a synth plugin from UVI based on the hardware tones of the SunSyn, an 8-voice analog-digital hybrid synthesizer. It comes with over 450 presets and a fully editable architecture.

Which operating systems does PX SunBox support?

PX SunBox runs on macOS 10.14 Mojave through macOS 15 Sequoia and on Windows 10 through Windows 11 (64-bit).

What do I need to use PX SunBox?

PX SunBox runs in UVI Workstation. You need a free Falcon iLok account to activate the license, which requires an internet connection. A dongle is not required.