The Sonicware Liven XFM is an unapologetically bold FM synthesis groovebox that reimagines the classic 4-operator FM engine through innovative Fusion FM technology. This chunky, desk-filling instrument combines the complexity of FM synthesis with the immediacy of a performance-oriented sequencer, wrapped in a plastic housing that prioritizes character over convention.

At its heart lies a 4-operator, 6-voice FM synthesizer enhanced by three revolutionary Fusion FM engines: X-LAB merges two FM sounds with parameter morphing, XFORM automatically transitions between sounds over time, and X-LFO uses an LFO to continuously modulate between paired sounds. These modes transform traditional FM synthesis from a cerebral exercise into an intuitive sound design playground, allowing users to blend over 300 preset sounds in fascinating ways.

The front panel bristles with controls – 16 knobs and two rows of 16 buttons surrounding a 27-note trigger keyboard. Every control serves multiple functions accessed through Function and Shift buttons, creating a learning curve that rewards persistence with deep creative possibilities. The workflow encourages exploration through the extensive preset library while offering full FM editing capabilities for adventurous sound designers.

The four-track sequencer transforms the XFM from a sound module into a complete groovebox. Supporting up to 64 steps per pattern with 128 storable patterns, the sequencer offers per-step parameter locking for every front-panel control. This enables complex automation, rhythm programming, and live performance manipulation that brings sequences to life with fluid filter sweeps, sound changes, and modulation variations on every step.

While the fixed-velocity keyboard and lack of sustain pedal support limit its traditional synthesizer applications, the XFM excels as a creative composition tool and performance instrument. The bold, brassy sound character paired with sometimes fierce effects processing reinforces its edgy, experimental nature. This is an instrument that rewards those willing to embrace its unconventional approach to FM synthesis and groove-based music creation.

Technical Specifications

Sound Engine

• FM Synthesis: 4-operator, 6-voice FM synthesizer
• Sound Library: Over 300 presets (leads, keyboards, strings, basses, pads, brass, percussion, sound effects, chords)
• Fusion FM Engines:
  • X-LAB: Parameter morphing between two sounds
  • XFORM: Automatic sound morphing with timing control
  • X-LFO: LFO-driven morphing between sounds
• Algorithms: 16 FM algorithms with custom operator routing capability
• Polyphony: 6 voices

Control Interface

• Knobs: 16 rotary encoders with multiple functions
• Buttons: 32 buttons (2 rows of 16)
• Keyboard: 27-note trigger keyboard (no velocity sensitivity)
• Display: Parameter indication via button LEDs and labels

Sequencer

• Tracks: 4 independent tracks
• Pattern Length: Up to 64 steps per pattern
• Pattern Storage: 128 patterns with chaining capability
• Display: 16 steps visible on front panel
• Timing Resolution: Down to 32nd note subdivisions (per-track basis)
• Parameter Lock: Per-step automation for all front-panel parameters
• Performance Features: Random step function, Stutter/note-repeat mode

Filter & Modulation

• Filter Types: Low-pass, high-pass, band-pass
• Filter Envelope: Attack, Decay, or Attack+Decay (linked to filter type)
• LFO: Single LFO per track with multiple waveforms
• LFO Routing: Pitch and filter modulation
• Envelope: Release/Gate control per track

Effects

• Effects Engine: Global single effect processor
• Effect Types: 12 effects including chorus, flanger, delay, crush, distortion, filters, tremolo, reverb
• Effects Send: Per-track send control (also functions as Release/Gate)

Connectivity

• MIDI: 5-pin DIN MIDI In/Out
• Sync: Sync In/Out
• Audio: Line Input, Line Output, Headphone Output
• Speaker: Built-in speaker (manually mutable)
• Power: External power supply required (not included)

Edit Mode

• FM Edit Overlay: Physical overlay for deep FM parameter access
• Quick Edit: 12 central knobs for operator control
• Pages: 2-page system for comprehensive FM editing
• Operator Control: Individual operator levels, ratios, fine-tuning, feedback, detuning
• Operator Routing: Custom routing between operators
• Scaling: Velocity and gain scaling across keyboard range
• Envelopes: Volume and pitch envelopes (time and level control)

Memory & Organization

• Sound Memories: Store custom FM tones
• Tracks: Save Sound Memories with filter, sequences, and settings
• Patterns: Save all four track settings with tempo and global effects
• Preset Banks: Multiple banks accessible via sound selection knobs

Performance Features

• Color Modes: 7 colors in X-LAB, 9 colors in XFORM for pitch switching behavior
• Lock Settings: Pitch lock and envelope lock in Fusion FM modes
• Real-time Control: All parameters accessible during playback
• Pattern Chaining: Link patterns for extended compositions
• Live Performance: Stutter, random, and real-time parameter manipulation

Physical Specifications

• Construction: Plastic housing
• Size: Chunky desktop form factor (specific dimensions not provided)
• Weight: Substantial desk presence (specific weight not provided)
• Power: External adapter required
• Portability: Built-in speaker for battery-powered operation (batteries not included)

Limitations

• Keyboard: No velocity sensitivity, no aftertouch
• MIDI: No sustain pedal support, no mod wheel response
• Effects: Inconsistent level gain, potential output overload
• Learning Curve: Complex multi-function control system requires dedicated learning time