Behringer UB-Xa Mini Analog Polyphonic Synthesizer

The Behringer UB-Xa MINI is a compact polyphonic analog synthesizer that brings the legendary OB-Xa sound into a portable, performance-ready format. Designed around an authentic reproduction of OB-Xa VCO and VCF circuitry from the ’80s, it delivers warm, rich analog tones with modern precision. Despite its slim footprint, the UB-Xa MINI features three analog VCOs, a dual-slope 12/24 dB analog filter, and a 16-step motion sequencer with knob automation. Add in 27 touch sensitive keys, extensive play modes, a flexible LFO with three waveforms and MIDI/USB connectivity, and you’ve got a compact analog polysynth with the depth and control of a studio classic—reborn for today’s stage and studio workflows.

Analog Engine and OB-Xa Circuitry Deliver Iconic Sound

At the heart of the Behringer UB-Xa Mini lies a pure analog signal path, inspired by the iconic OB-Xa with an authentic recreation of its iconic VCO and VCF circuitry. Its three independent voltage-controlled oscillators (VCOs) provide lush saw and square waveforms that form the foundation of rich, evolving tones. A selectable 12/24dB analog low-pass filter adds powerful sculpting capabilities, while adjustable resonance invites deep sweeps and resonance-driven harmonics. The 27 touch-sensitive keys feel responsive and musical, enabling expressive performance in a scaled-down format. Every knob, key and switch has been tuned to offer an organic and immediate connection between your hands and your sound.

Motion Sequencer and Play Modes Expand Performance Options

Beyond its powerful core tone engine, the UB-Xa Mini is equipped with features that unlock spontaneous creativity and deep sonic exploration. A 16-step motion sequencer with 10 memory slots lets you record and recall knob movements, allowing animated patches that evolve in time. Extensive play modes—ranging from unison and polyphony to fifths, octaves and experimental ring configurations—make it easy to discover new musical territory. A multi-mode ring modulator introduces edgy metallic textures, while the LFO offers three waveforms with syncable modulation across pitch, filter cutoff and pulse width. With USB-C and 5-pin MIDI connectivity, this compact analog polysynth is equally at home in a modern studio, live performance rig or portable production setup—an ideal choice for synth enthusiasts, producers and creators who want to move fast and sound massive.