Trigger Rhythm

SY-1K Trigger Rhythm is a recreation of a legendary 1980s analog drum 'synthesizer', one of the most distinctive and influential electronic drum sounds of the era. From the thunderous toms on Phil Collins' "In the Air Tonight" to the cutting snares that defined the decade's pop and rock productions, this classic analog character shaped countless iconic recordings.

At its core, SY-1K features the dual CMOS 4069 triangle wave oscillators, authentic filter pole spreading with unequal integrator capacitors, envelope-based pitch sweeping, and characteristic CMOS asymmetries that created the legendary 80s drum sound. Building on this vintage foundation, we've added five modern waveforms, comprehensive LFO modulation with tempo sync, MIDI key tracking, and contemporary drive saturation.

Whether you're seeking the authentic 80s sound or exploring new territories with extended modulation capabilities, SY-1K Trigger Rhythm delivers the warmth, punch, and character that made the original a studio legend. From classic gated reverb drums to modern EDM percussion, from vintage analog warmth to cutting-edge digital precision, SY-1K captures the essence of hardware drum synthesis while offering the convenience and flexibility of modern plugin technology.

Key Features

• Authentic 80s Drum Synth Recreation:
  • Complete dual CMOS 4069 triangle wave oscillator modeling.
  • Authentic filter pole spreading with unequal integrator capacitors (1nF, 2nF, 1nF).
  • CMOS propagation delay artifacts and temperature drift simulation.
  • Mode E pseudo-sawtooth via +8V injection technique.
  • Classic envelope-based pitch sweeping.
• Extended Waveform Library:
  • 7 vintage modes: Triangle, FM, Dual Mix, Velocity Mix, Pseudo-Saw, Noise, FM+Noise.
  • 5 additional modern waveforms: Asteroid, Coconut, Bones, Boxeur, Bottle Cap.
  • Each mode with unique harmonic content and character profiles.
  • Authentic CMOS asymmetries and analog imperfections.
• Comprehensive LFO System:
  • Four waveform shapes: Square, Triangle, Sine, Sawtooth.
  • Tempo sync with 13 note divisions (1/1 to 1/16T + dotted variants).
  • 0.1-50Hz frequency range for creative modulation.
  • Sample & Hold for vintage random pitch modulation.
  • Bipolar depth control (-100% to +100%) for inverted modulation.
  • Transport-synced phase reset for reproducible behavior.
• Advanced Trigger System:
  • Five trigger modes: Audio, MIDI, MIDI Key, Audio+MIDI, Audio+MIDI Key.
  • MIDI key tracking with full chromatic support (C1-B3).
  • Note sync override for precise musical tuning.
  • Adjustable trigger threshold and sensitivity.
• Modern Enhancements:
  • Advanced drive algorithm with four saturation stages.
  • Professional envelope handling with click-free retriggering.
  • Comprehensive automation support with parameter smoothing.
  • LED trigger indicator for visual feedback.
• Professional Audio Quality:
  • 64-bit floating-point internal processing.
  • Anti-aliasing and reconstruction filtering.
  • Optimized for low CPU usage and real-time performance.
  • Zero-latency design suitable for live performance.