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Behringer UB-Xa MINI Portable Polyphonic Analog Synthesizer
Bring the massive, sweeping textures of the golden age of analog synthesis straight to your desktop or mobile rig. The Behringer UB-Xa MINI is a highly compact, ultra-portable polyphonic analog synthesizer that distills the sonic muscle of the full-sized UB-Xa into a travel-friendly footprint. Engineered with a pure analog signal path, this micro-powerhouse delivers the legendary, brassy leads, lush pads, and cutting basses that defined '80s pop, retro synthwave, and cinematic scoring—all at an incredibly approachable price point.
Angkor Music Technical Evaluation: Triple VCO Architecture & Paraphonic Voice Management
Don't let its diminutive stature fool you; the UB-Xa MINI features a heavy-hitting oscillator core driven by three rich, distinct Voltage Controlled Oscillators (VCOs) spitting out classic saw and square waveforms based on authentic Oberheim OB-Xa circuit designs. By managing these individual tracking paths across a flexible paraphonic engine, the synth allows you to play multiple notes simultaneously while routing the combined signal layer through a shared filter and VCA envelope matrix. The result is a thick, harmonically dense voice profile that stays punchy whether you're layering chords or tracking searing monosynth lines.
E-E-A-T Sound Design Engine: Dual-Slope Filter & 16-Step Motion Automation
At Angkor Music, our hardware synthesizer product group highlights the UB-Xa MINI for producers needing studio-grade vintage flavors without sacrificing precious workspace real estate. Dual-Slope VCF Sculpting: The filter section features a selectable 12 dB or 24 dB analog low-pass filter with adjustable resonance, mirroring the smooth or aggressive character options of historic poly-synths. Dynamic Motion Sequencer: Take your tracks further with an on-board 16-step motion sequencer containing 10 dedicated memory slots. This allows you to record live knob and parameter movements in real-time, building shifting textures and complex grooves automatically.
Technical Specifications
- Brand: Behringer
- Model Portfolio: UB-Xa MINI
- Synthesizer Type: Portable Paraphonic / Polyphonic Analog Synthesizer
- Signal Path Topology: 100% Pure Analog (VCO, VCF, and VCA Architecture)
- Keyboard Interface: 27 Capacitive Touch-Sensitive Expressive Keys
- Oscillator Allocation: 3 x Independent VCOs per Voice with Saw and Square Waves
- Voltage Controlled Filter (VCF): Selectable Dual-Slope 12 dB / 24 dB Low-Pass Filter with Resonance Control
- Modulation Core: LFO with 3 Waveforms (Pitch, Cutoff, and Pulse-Width destinations)
- Envelopes: Master ADSR Envelope Generator for Filter and Amplitude Shaping
- Harmonic Processing: Integrated Multi-Mode Ring Modulator for Metallic Texture Generation
- Performance Play Modes: Poly, Unison, Octaves, Fifths, Ring Unison, and Ring Poly
- Sequencer Engine: 16-Step Motion Sequencer with Real-Time Control Recording & 10 Patch Memory Slots
- Computer Integration: Fully Compatible with Behringer SynthTribe Software for Patch Backup & Firmware Updates
- Analog & Digital Connectivity: USB-C (Power/Data), 5-Pin DIN MIDI Input, 3.5mm Sync In/Out, 3.5mm Headphone/Line Output
What's In The Box Product Contents
- Core Hardware Unit: 1 x Behringer UB-Xa MINI Analog Synthesizer
- Power Supply Connection: 1 x USB-C Power Interface Cable
- Documentation: 1 x Quick Start Manual & SynthTribe Ecosystem Guide
Key Product Features
- Authentic OB-Xa Style Core: Recreates the legendary, fat analog synth circuitry of the 1980s in a highly accessible desktop package.
- Triple Oscillator Performance: Three discrete analog VCOs stack together to give your tracks incredible weight, warmth, and harmonic depth.
- Selectable 12/24 dB Dual Filter: Instantly switch between smooth 2-pole acoustic modeling or aggressive, biting 4-pole filter slopes with highly resonant peaks.
- Expressive 27 Touch Keys: Highly responsive capacitive keybed delivers smooth tactile playability without the bulk of mechanical moving parts.
- Versatile Advanced Play Modes: Experiment with unique multi-mode architectures including unique Ring Poly and Ring Unison variations for gritty, cutting modern leads.
- 16-Step Automated Motion Sequencer: Record evolving patterns along with real-time knob parameter automation to keep your rhythm tracks breathing.
- Modern Bus-Powered Portability: Runs completely off standard USB-C power grids, letting you produce inside studios, backstage areas, or on public transport lines.
Frequently Asked Questions
Can I use an external MIDI keyboard controller to play the Behringer UB-Xa MINI?
Yes, you can. The UB-Xa MINI is equipped with a standard, full-sized 5-pin DIN MIDI Input port on its rear panel. This allows you to easily connect a full-sized piano-action keybed, a larger MIDI controller, or an external hardware sequencer to play the internal analog synth engine while bypassing the built-in 27 touch keys entirely.
Is the UB-Xa MINI a true multi-voice polyphonic synth or a paraphonic synthesizer?
Technically, the UB-Xa MINI features a paraphonic voice structure utilizing three separate oscillators. You can play multiple notes at the same time to create polyphonic chord structures, but those combined notes pass together through a single, shared analog filter and ADSR envelope curve rather than having individual voice components dedicated to every single key pressed. This is a common and highly musical layout used to deliver authentic analog circuitry at an ultra-low cost.
How do I manage my sequence presets or update the internal firmware on this synth?
The UB-Xa MINI connects directly to your Mac or Windows PC using the included USB-C port. By downloading and running Behringer's official, free SynthTribe software app, you can easily handle firmware update routines, back up your favorite 16-step motion sequencer patterns, and edit system-wide preferences from a clean software dashboard.
Additional information
| Weight | 0.66 kg |
|---|---|
| Dimensions | 26 × 16 × 7 cm |
| type | Analog Synthesizer |






