Twisted Electrons FLEXfm Groovebox

Full Description

Build detailed sounds with flexible synthesis

FLEXfm gives you eight independent voices, each containing four operators that can combine synthesis, samples, noise, and physical modelling. Its modulation matrix lets you connect operators using frequency, amplitude, and ring modulation, creating punchy bass sounds, evolving pads, and complex textures.

You can also explore different sound sources, including wavetables, vocal tones, and custom-drawn waveforms. Choose between monophonic synthesis, chord voicing, and oscillator sync to suit your sound. Four LFOs per voice provide further movement, with adjustable modulation depths and drawable waveforms. You can even use one LFO to influence another, creating detailed changes that develop over time.

Shape your tone with analog and digital filtering

Each FLEXfm voice includes a dedicated analog multimode filter, letting you shape its frequency response and introduce drive. For more unusual textures, the digital filter options offer additional sound-shaping possibilities. ORACLE uses three-dimensional morphing to move between resonant peaks, notches, vowel-like sounds, and metallic characteristics.

CROQUETTE provides three coloured low-pass filtering modes for introducing different degrees of grit. ADSR envelopes, velocity sensitivity, and key tracking give you further control over filter behaviour. Full-colour LED rings around the main controls display parameter values and modulation activity, helping you follow adjustments during sound design and live performance without constantly checking the screen.

Create evolving patterns and expressive arrangements

The integrated sequencer provides 16 patterns, each containing eight voice lanes with up to 128 steps and eight substeps per step. Individual lane lengths and playback rates allow different rhythms to develop together, while probability, swing, and conditional steps introduce variation. You can arrange patterns across eight named song sections, complete with key changes and repeat settings.

The joystick adds another performance dimension, allowing you to morph between prepared pattern variations or trigger rhythmic effects. Polyphonic sequencing supports four overlapping notes per voice, while tempoFlex curves let individual rhythms accelerate or slow against the master tempo. This makes developing changing arrangements straightforward.

Sample, perform, and connect to your studio

Record through the mono audio input, import WAV files, or use the built-in piezo drum pad to capture dynamic performances. Eight mono sample pools provide approximately 13 seconds each, with slicing, reversing, and repitching available for creative editing. Twelve-pad drum kits offer individual tuning, gain, and playback adjustments.

Built-in reverb, delay, and compression help shape your finished mix. For studio integration, eight individual mono outputs provide separate voice routing, while USB audio streams individual tracks directly into your DAW. The companion editor also supports MIDI pattern editing, sound management, and arrangement control, making it easier to develop ideas across hardware and software.

Features

• Compact groovebox with eight voices and a flexible four-operator FM synthesis engine
• Includes 32 editable FM algorithms for deep sound design possibilities
• Dedicated analog multi-mode filter on every voice for added warmth and character
• Built-in sampler with USB sample import and direct audio recording support
• Supports resampling for creating layered and evolving sounds
• Twelve encoders with LED rings provide quick hands-on control
• Joystick enables expressive real-time performance control and sound morphing
• Morph smoothly between four patterns or four FM algorithms
• Each voice includes four LFOs for advanced modulation options
• Create custom LFO waveforms using joystick recording
• Advanced sequencer with polyphonic chaining capabilities
• Steps can be divided into up to eight sub-steps for detailed rhythmic programming
• Operator masking allows per-step FM operator activation changes
• Built-in probability engine for evolving and unpredictable sequences
• Snapshot save and recall for quick performance changes
• Mix mode stores and recalls complete mix scenes
• Velocity-sensitive trigger pad supports dynamic performance techniques
• Suitable for rolls, ghost notes, and live recording workflows
• Stereo main output plus individual outputs for all eight voices
• Audio input supports direct sampling and external sound processing

Specifications

• Connections:
  • DC IN: 9 V DC, 1 A, centre-positive power input
  • USB: Editor, plug-in, FLEXIO, FLEXTV, drive and update modes
  • MIDI IN / OUT: Notes, clock, transport, and control
  • INPUT: Mono TS audio input
  • MAIN L / R: Main stereo mix
  • PHONES: Headphone copy of the main mix
  • OUT 1-8: Mono TS individual voice outputs
• Dimensions: 33.5 × 16 × 7 cm
• Product Code: TE-FLEXfm