Bold and Familiar - The Sequential Trigon-6 Analog 6-Voice Poly Synthesizer

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.


  • 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
  • Acclaimed Prophet-6 and OB-6 synths: 6-voice polyphony, unrivaled playability, easy programmability, and modest footprint—packed into a four-octave, semi-weighted keyboard with velocity and channel aftertouch
  • Dual effects section provides studio-quality reverbs, delays (standard and BBD), chorus, flanger, phaser, and ring modulator
  • Vintage Knob, which adds voice-to-voice variations in calibration and component behavior


SPECIFICATIONS
  • Oscillators
    • Three discrete VCOs per voice
    • Simultaneously selectable wave shapes: triangle, sawtooth, reverse sawtooth, and variable-width pulse
    • Pulse width per oscillator
    • Hard sync: oscillator 1 syncs to oscillator 2
    • Keyboard tracking on/off (oscillator 3)
    • Oscillator feedback and drive controls for increased signal saturation
    • White Noise source
    • Keyboard pitch tracking on/off
  • Low-Pass Filter
    • 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
    • Velocity modulation of envelope amount
    • Keyboard tracking: off, half, full
  • Filter Envelope
    • Four-stage (ADSR) envelope generator
    • Velocity modulation of envelope amount
  • Amplifier Envelope
    • Four-stage (ADSR) envelope generator
    • Velocity modulation of envelope amount
  • Low Frequency Oscillator
    • Five wave shapes: sine, sawtooth, reverse sawtooth, square, and random (sample and hold)
    • LFO sync
    • Initial amount
    • Mod destinations: oscillator 1 frequency, oscillator 2 frequency, oscillator 3 frequency, oscillator 1 pulse width, oscillator 2 pulse width, oscillator 3 pulse width, filter cutoff, amp (VCA)
  • Poly Mod
    • Sources: oscillator 3 (bi-polar) and filter envelope (bi-polar)
    • Destinations: oscillator 1 frequency, oscillator 2 frequency, oscillator 3 frequency, oscillator 1 pulse width, oscillator 2 pulse width, filter cutoff, feedback amount
  • Vintage Knob
    • Recreates vintage synth characteristics by adding voice-to voice variations in component behavior
  • In/Out
    • Left/mono and right audio outputs (2 x 1/4-inch phone jack)
    • Headphone output (stereo, 1/4-inch phone jack)
    • MIDI in, out, and thru ports
    • USB for bidirectional MIDI communication
    • Filter cutoff expression pedal input
    • Volume expression pedal input
    • Sustain footswitch input
    • Sequencer start/stop footswitch input
  • Physical Specifications
    • 31.8 x 12.7 x 4.6 inches (80.7 x 32.3 x 11.7 cm)
    • 20 lbs (9.5 kg)
    • Maple end panels

Manufacturer: Sequential
Model: SEQ-3800
SKU: I727239-N-1-WHXA
UPC: 855346000548

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Since 1958, Chuck Levin’s Washington Music Center has been the trusted destination for musicians and audio professionals across Maryland, Virginia, and Washington, D.C. Family-owned and operated, our legendary music store delivers Everything in Music®—from instruments and recording gear to pro audio, rentals, and repair services.

Our team of musicians and industry experts lives and breathes gear, helping you build the perfect setup for your next performance, studio session, or installation. As an authorized dealer for top brands, we also offer our award-winning CHUCKSCLUSIVE line—exclusive, limited-edition instruments and collaborations recognized with the NAMM Top 100 Dealer Innovation Award for redefining what a music retail experience can be.

Chuck Levin’s isn’t just a store—it’s a community built by players, engineers, and creators who share a lifelong passion for sound. Stop by our legendary Wheaton, MD showroom or contact us anytime for expert advice, product questions, or the best possible deal on your next piece of gear.


ConditionBrand New (New)
Brand New items are sold by an authorized dealer or original builder and include all original packaging.Learn more
Brand
Model
  • Trigon-6 49-Key 6-Voice Polyphonic Synthesizer
Categories
Number of Keys
  • 49 Keys
MIDI I/O
  • USB MIDI
  • MIDI Through
  • MIDI Input
  • MIDI Output
Keyboard Action
  • Semi-Weighted
Analog / Digital
  • Analog
Key Size
  • Full Size
Polyphony
  • 6 Voices

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Chuck Levin's Washington Music Center

Wheaton, MD, United States
Joined Reverb:2014

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