Duality 100 / Duality 100RS

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We are on the March number of GuitarPlayer.com! Read the review of the Duality 100 by Art Thompson

Duality 100 is the avant-garde of our amp production. Three independent channels of pure bliss for the ears.

First channel is crystal clear, fat and never sterile, always ready to provide the clean sound inspired by the early ‘60s single channel amplifiers. Dualityʼs gain and volume controls guarantees to give you a multitude of tones.
Second channel, inspired by the “plexi sound”, has a vintage voice that easily manages to go from a semi-clean tone to a very powerful crunch with only the use of your right hand. Third channel is sonic, three-dimensional, rich and harmonic.

It has a high gain and is ready to explode tons of distorted volume. Second and third channel can both be boosted with a “lead boost” to obtain an over the top saturation and still keeping the dynamics and clarity between all the strings. It can cover any sound between crystal clean to the most thorough lead.


Duality100RS, introduced in early 2022, is a modified version of original Duality100’s circuit. Due to its popularity, it’s now available and orderable from our catalog, anytime.

The mod consist in an overall increased saturation level, more pronounced top-end and a more compressed sound.  All variations from original design are exclusively to CH2 and CH3 (distorted channels), while CH1 (clean channel) still the same.

Power amp section also is loaded with 6L6s tubes, instead of EL34.
New front grill and black knobs are aesthetic differences to recognize RS version from the original one.

  • Clean Channel: inspired by the early ‘60s single channel amplifiers. Volume, gain, high, middle and bass and a bright switch. Simple and functional controls;
  • Vintage Channel: inspired by the vintage distorted “plexi sound”. A true sonic nirvana. From semi-clean tones to a powerful crunch with only the use of your right hand, all in a single channel. Volume, treble, middle, bass, gain, bright switch, and lead boost;
  • Modern Channel: A modern distorted high gain sound. It shares the eq with the Vintage channel, but has dedicated volume and gain controls. Volume, treble, middle, bass, gain, bright switch, and lead boost;
  • High-voltage buffered effects loop; Double Master volume, for two steps of volume;
  • MIDI communication (PC and CC) with intelligent internal saving;
  • Power and signal transformers designed by our specifications, made in Italy;
  • Entirely designed, created, produced and assembled by hand in Italy by RedSeven Amplification;
  • Optional FS-7 available.

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