Serge GTO for eurorack

Serge GTO

The Serge GTO is a newly designed, complex multi-functional module which can be patch programmed to provide various slew and sample functions both for audio and CV signals, but also act as a (dual) oscillator or filter or bitcrusher or ... It is one of the essential Serge modules. The GTO is an offspring of the famous Serge SSG.

The Smooth section will place a positive and negative slew on input voltage transitions for lag effects, voltage controlled portamento and for low frequency filter applications. In Cycle-mode (cycle jack patched to the input), the Smooth side “will oscillate yielding a voltage controlled triangle wave LFO. A high level into the HOLD input will enable the Smooth Function to be used as a track-and-hold circuit with voltage controlled slew rate.

The Stepped function can be used as a sample-and-hold with voltage controlled slew rate limiting. In Cycle mode, a pulse applied to the Sample input will generate complex staircase waveforms for control voltage applications and for use as audio signals.

Each side has a temperature-compensated 1V/Oct input for use as an oscillator with a frequency range of up to 20kHz (left) and 8kHz (right). Each side tracks over 5 or 6 octaves.

The Coupler is an internal comparator which compares the output levels of the Smooth and the Stepped Generators. This output is useful for generating complex control voltages or random voltages.

Documentation: Serge GTO user manual
Random*Source · Serge GTO explorations

Some details of the Random*Source Serge GTO module:

  • Designed by Serge Tcherepnin in 2022
  • Authentic SERGE design
  • Increased audio range (up to >20kHz)
  • Eurorack format (3U), 18 hp
  • Power consumption: 45mA @ +12V, 40mA @ -12V
  • (NEW) Skiff-friendly: < 25mm (1")
Complete Module    420 EUR
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