The Trigon-6 is Sequential’s polyphonic take on the classic, thick and creamy, 3-oscillator-plus-ladder-filter analog sound that defined the dawn of the synth era. It’s a sound that bridges genres and styles — now refined and redefined with Sequential’s own modern imprint.
At the heart of the Trigon-6 sound are three newly designed voltage-controlled oscillators (with triangle, saw, and pulse waves) and an enhanced version of the ladder filter that Sequential created for its Pro 3 mono synth. The switchable 2/4 pole resonant filter design has dedicated drive and feedback controls that make it effortless to go from bold and crunchy to silky and smooth with a simple knob turn.
The Trigon-6 has all of the best qualities of Sequential’s acclaimed Prophet-6 and OB-6 synths — 6-voice polyphony, unrivalled playability, easy programmability, and modest footprint — packed into a four-octave, semi-weighted keyboard with velocity and channel aftertouch. What differentiates it from its siblings is its unmistakable “3-oscillators-through-a ladder-filter” punch. It raises the bar for what the ideal power poly can and should be.
Naturally, the Trigon-6 has the full complement of Sequential’s ”must-have” sound-sculpting features including super snappy envelopes, a syncable LFO with multiple waveforms and destinations, a polyphonic step sequencer, and an arpeggiator. Best of all, the knob-per-function front panel of the Trigon-6 puts these controls at your fingertips. And the ready-made palette of 500 factory and 500 user presets provides classic basses, leads, and pads to jump start any project.
Also present is Sequential’s classic Poly Mod, with enhancements for creative sound design. Modulation sources are filter envelope and oscillator 3 (both with bi-polar control). Destinations include oscillator 1, 2, and 3 frequency, oscillator 1, 2, and 3 pulse width, filter cutoff, and feedback. Unison mode is here as well, featuring configurable voice count (1-6 voices for up to 18 simultaneous oscillators) and key modes.
The dual effects section provides studio-quality reverbs, delays (standard and BBD), chorus, flanger, phaser, and ring modulator. The independent stereo distortion effect adds on-demand aggression and is 100% analog.
Finally, to give even more classic organic warmth to an already classic synth, there’s the Vintage Knob, which adds voice-to-voice variations in calibration and component behavior. Vintage behavior is adjustable from subtle to extreme to emulate the stability of a perfect modern instrument or a time-worn relic.
Add all of this up and the Trigon-6 represents a modern synth workhorse with a bold, versatile, 3-oscillator ladder filter-based sound. It builds on the past, refines the present, and redefines the future for accessibility, portability, and playability in an analog poly synth.
Features
- Three discrete VCOs per voice
- Simultaneously selectable wave shapes: triangle, sawtooth, reverse sawtooth, and variable-width pulse
- Oscillator feedback and drive controls for increased signal saturation
- White Noise source
- Switchable two/four-pole, discrete, resonant, low-pass, ladder filter per voice
- Filter can be driven into self-oscillation with the Resonance control
- Bi-polar filter envelope amount and velocity modulation of envelope amount
- Four-stage (ADSR) filter and amplifier envelopes w/ velocity modulation
- Five LFO wave shapes: sine, sawtooth, reverse sawtooth, square, and random (sample and hold)
- Poly mod from oscillator 3 (bi-polar) and filter envelope (bi-polar)
- Vintage knob recreates vintage synth characteristics by adding voice-to voice variations in component behaviour
- Master clock with tap tempo, BPM control and display, MIDI clock sync
- Powerful up, down, up/down, random, and assign arpeggiator w/ 3-octave range
- Polyphonic step sequencer with up to 64 steps and rests
- Stereo analog distortion
- Dual, 24-bit, 48 kHz digital effects, including: reverb (room, hall, plate, spring), syncable delay (full bandwidth digital delay and emulated bucket brigade), chorus, flanger, phase shifter, and ring modulator
- True bypass maintains fully analog signal path when digital effects are off
- Full-sized, semi-weighted, 4-octave keyboard with velocity and aftertouch
- Backlit pitch and mod wheels
- Spring-loaded pitch wheel with selectable range per program (1 to 12 semitones up and down)
- Transpose controls for an 8-octave range
- Hold switch latches held notes on
- Polyphonic portamento
- Unison (monophonic) mode with configurable voice count, from one to all six voices, chord memory, and key modes
- 500 user and 500 factory programs in 10 banks of 100 programs each
- 1/4" Left/mono and right audio outputs and stereo 1/4" headphone output
- MIDI in, out, and thru ports plus USB
- Filter cutoff, volume, sustain, and seq. start/stop expression pedal inputs