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Description
The UDO Audio Super 6 ST49 polyphonic analog synthesizer combines cutting-edge digital oscillators and classic analog circuits in a 49-key package designed for expressive control. Featuring polyphonic aftertouch, the ST49 keybed lets you shape each note individually for nuanced performances. The 12-voice engine operates in true stereo binaural mode, creating six "super voices" for a spacious, dynamic soundstage. Fast front-panel access, sturdy build quality and USB/MIDI connectivity make this synth an efficient choice for musicians focused on detail and hands-on workflow. Its intuitive layout and powerful sound engines support creative sessions, from studio production to live sets.
Binaural Analog Signal Path Delivers Expansive Stereo Imaging
The synth splits its twelve voices into pairs, forming six stereo "super voices" for advanced spatial effects. Each channel—left and right—can be detuned, phased and filtered independently, allowing detailed control over stereo width and movement. This architecture creates a sense of depth and space, helping sounds feel more alive and present in a mix.
Polyphonic Aftertouch Keybed Enables Individual Note Expression
The ST49 features a semi-weighted Fatar keybed with velocity and polyphonic aftertouch. Each note responds separately to pressure, so users can bring out vibrato, filter sweeps or pitch bends one key at a time. This design supports expressive playing styles, letting complex passages and subtle textures stand out during performance.
Front-Panel Modulation Matrix Enhances Workflow and Setup
All modulation is handled on the front panel, with every control available for assignment—no hidden menus. LEDs show which parameters are active, making real-time edits clear and simple. The modulation matrix supports fast sound design, and USB/MIDI connections allow for patch management and integration with other gear. Sync features keep arpeggiators and sequencers in time with external devices.
Durable Build Maintains Consistent Performance
The chassis uses strong metal and high-quality hardware for reliability in demanding environments. Keys, sliders and knobs withstand frequent use, and USB updates are straightforward for maintaining patches and firmware. This construction helps the synth deliver stable operation during regular touring, gigging, or studio work.
UDO Audio Super 6 ST49 Synthesizer Supports Creative Output
Musicians and producers who prioritize expressive play and detailed stereo sound will find this synth enhances both live and studio work. The combination of aftertouch, modulation access and binaural architecture helps users develop evolving textures and dynamic arrangements. With straightforward controls and robust engineering, the ST49 supports focused creative sessions and reliable performance every time.



Features
- Binaural analog signal path creates rich stereo movement and spatial effects
- 12-voice polyphony offers flexibility for complex, layered compositions
- Semi-weighted ST49 keyboard with polyphonic aftertouch adds expressive control
- Dual FPGA-based oscillators provide alias-free sound for warm basses and leads
- Super-wave oscillator features de-phased stereo waves for evolving textures
- Modulation matrix maps panel controls for precise sound sculpting
- Arpeggiator and 64-step sequencer enable rhythmic and melodic experimentation
- Dual-mode stereo chorus and syncable delay enhance tonal depth and clarity
- External audio input integrates seamlessly with the VCA, VCF and effects
- USB MIDI and patch management simplify workflow and file organization
Specs
- Keys: 49-Key ST49 Semi-Weighted Fatar Keyboard with Velocity and Polyphonic Aftertouch
- Controllers: Two-Axis Bender with LFO Trigger, Expression and Sustain Pedal Inputs
- Performance Modes: Poly 1, Poly 2, Solo, Legato, Variable Unison (Size and Type)
- Additional Controls: Portamento, Playable Spring-Lever Octave Selector, Dedicated Controls for Pitch and Filter Modulation
- MPE: Full Compliance with Note-On/Off Velocity, Polyphonic Aftertouch, Polyphonic Pitch Bend, Polyphonic Expression
- Architecture: 2 Main FPGA-Based Oscillators per Voice
- DDS 1: Super-wave oscillator with centroid + six sister oscillators (50MHz sample rate), selectable de-phasing for stereo field, 16 user-downloadable waveforms (.ws6 format)
- DDS 2: Algorithmic oscillator (50MHz), waveshapes: sine, saw, square, triangle, noise, pulse; hard sync, LFO mode, sub oscillator mode, PWM
- Modulation: Cross-modulation (DDS 2 to DDS 1), envelope and LFO modulation of pitch and spread, pulse-width modulation
- Mix-Level: Independent for DDS 1 and DDS 2
- X-Fade Mode: Crossfades DDS 1, DDS 2, or Audio Input across keyboard range
- Type: SSI2144 Analog 4-Pole Low-Pass Filter (Self-Resonant)
- Features: 2 Overdrive Levels, Fixed or Linked High-Pass Filter for Band-Pass Response
- Tracking: Selectable Keyboard Tracking Modes, Filter Autotune
- Modulation Sources: ENV 1, ENV 2, LFO 1, DDS 2
- Type: Analog VCA
- Modulation: Fixed or Variable Envelope (ENV 2), LFO 1 Modulation
- Dynamics: Selectable Velocity Sensitivity
- ENV 1: Invertible HADSR, Looping Mode, Mappable through Mod Matrix
- ENV 2: ADSR, Multiple Destinations
- LFO 1: 0.05Hz–20kHz, Stereo Phase Control, One-Shot Mode, Keyboard Tracking Mode, Syncable to Sequencer/Arp/External Clock, Can Act as Additional Oscillator
- LFO 2: Adjustable Rate and Delay, Triggered or Always-On
- Routing: Intuitive Matrix with Pre-Defined and User-Assignable Destinations
- Feedback: LED Indicators for Depth and Routing
- Performance: 20x Audio-Rate Computation
- Arpeggiator: Multi-Mode with Smart-Hold, MIDI-Syncable
- Step Sequencer: 64 Steps with Note, Rest, Slide, Accent, and Length Tracks; 16 Memory Locations
- Sync: Arpeggiator and Sequencer Lockable to LFO 1 and Delay
- Type: Stereo Input (feeds VCA, VCF, FX)
- Triggering: Envelopes and LFO 1 Triggered by Input Level
- Chorus: Dual-Mode Stereo Chorus, 24-bit/192kHz Processing
- Delay: Stereo, Syncable and Modulatable, 24-bit/192kHz Processing
- Additional: Dual Stereo 24-bit Digital FX Engine
- Patch Memory: 128 Rewriteable Slots (64 Factory, 64 User)
- MIDI: In, Out, Thru (DIN)
- USB: Patch/Sequence/Waveform Management (No Drivers Required), OS Upgrade Support
- Audio Input: Stereo 1/4" Jack
- Main Outputs: Unbalanced Stereo 1/4" Jacks
- Headphone: High-Quality Stereo Output
- USB File Management: Easy Upload/Download of Patches, Sequences, Waveforms
- OS Updates: Simple Over-USB Firmware Upgrade
- Dimensions: 33.3" × 14.2" × 4.1" (845 × 360 × 105 mm)
- Weight: 21.4 lb. (9.7 kg)
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