Analog synthesizer Behringer UB-Xa 37-key polyphonic keyboard

Behringer UB-Xa 37-key polyphonic keyboard is an analog desktop and keyboard synthesizer designed to recreate classic analog tones through dedicated oscillators, filters and modulation sections. With 37 full-size keys and polyphonic capability, the instrument offers hands-on control for studio production, live performance and sound design. It integrates with MIDI setups for sequencing and external control while providing a tactile interface for real-time sound shaping.

Advantages

The UB-Xa delivers authentic analog character using discrete oscillator and filter circuitry, allowing for warm, full-bodied sounds. Immediate front-panel controls make sound sculpting intuitive, and the polyphonic voice architecture expands harmonic possibilities beyond monophonic lead patches. Compact desktop form factor and keyboard option provide flexible placement in studio racks or on stage. MIDI connectivity ensures compatibility with modern DAWs and external controllers.

Suitable for

• Studio music production and arranging
• Live performance and onstage sound shaping
• Sound design for film, TV and games
• Education and synth programming practice

Key specifications

• Analog signal path with dedicated oscillators and analog filters
• 37 full-size keys with polyphonic voice capability
• Extensive front-panel modulation and filter controls for real-time tweaking
• MIDI IN/OUT/THRU for integration with external gear and DAWs
• Desktop and keyboard form factor suitable for studio and stage use

How to use

Connect the UB-Xa to power and an audio output (monitors or mixer). If required, connect MIDI IN/OUT to your DAW, sequencer or external controller for note and clock transmission. Use the oscillators, filter cutoff, resonance and envelope controls on the front panel to sculpt the basic tone. Adjust modulation routings and LFO settings to introduce movement, then save or document preferred settings for recall. For polyphonic patches, play chords on the 37-key keyboard or trigger notes via MIDI sequencing.

Recommendations

For best sonic results, use balanced audio outputs where available and position the synthesizer near your audio interface to reduce cable length. When integrating with a DAW, set MIDI clock preferences to avoid timing conflicts and verify channel routing for multi-timbral setups. Regularly back up favourite patches or parameter settings externally if you rely on specific sound configurations for live shows.