Ultra is a next-generation software synthesizer from Ultra Audio, built for musicians, producers, composers, and sound designers looking for a powerful and flexible instrument for modern music production.

At the heart of Ultra is the UltraWave™ engine, which introduces a creative approach to wavetable synthesis. Stereo wavetables allow different content to be loaded into the left and right channels, creating a wider and more immersive stereo character. The engine also supports multisampling, allowing different wavetables to respond to pitch and velocity while morphing between them in real time.

Ultra also provides pitch and amplitude curves, making it possible to incorporate characteristics from recorded sounds into custom wavetables. Its advanced WAV import workflow can extract waveform cycles from digital audio files, giving sound designers additional flexibility when creating unique sounds.

The synthesizer includes multiple oscillator types, including UltraWave, Analog, Super, and Sampler, along with dedicated Noise and Sub oscillators. Its synthesis architecture also provides filters, modulation sources, modulation matrix controls, LFOs, envelopes, arpeggiator/sequencer features, macros, and a range of built-in effects such as distortion, dynamics, chorus, flanger, phaser, EQ, reverb, delay, and side-chain processing.

Ultra can be used as a standalone application or as a VST3 and AU plugin, making it suitable for a wide range of modern DAWs. The official installation documentation lists VST3 support for both Windows and macOS, with AU support on macOS.

Another major part of Ultra is its online sound library and store. Users can browse patches and sound packs created by the Ultra community, preview sounds, organize favorite patches, and expand their library with additional sounds. The library can also synchronize through Ultra's cloud service when signing in on another computer.

For producers and sound designers, Ultra offers a combination of advanced wavetable technology, flexible synthesis, extensive modulation, built-in effects, and a growing ecosystem of sounds. It can be used for electronic music, cinematic production, ambient sound design, experimental music, basses, leads, pads, textures, sequences, and other modern synthesizer-based sounds.