SuperKar+ 32-Voice String Synthesis

The SuperKar+ is not just another Eurorack module; it's an expressive, living machine capable of generating strings, bowed textures, tubes, percussion, or harmonic pads with a completely unique and distinctly organic naturalness. Based on Karplus-Strong synthesis, it features two independent voices: Solo Voice and Chord Voice with up to 16 notes of polyphony per voice, offering an immense playground in a compact format.

Regarding manufacturing, Strymon's signature touch is immediately recognizable. The SuperKar+ is designed and manufactured in the USA, with a robust audio architecture built around a 520 MHz Superscalar ARM processor, 32-bit floating-point processing, stereo inputs/outputs, TRS MIDI Type A, and a rear USB port for updates. The front panel boasts a clear layout and control organization designed to remain intuitive despite the wealth of possibilities. The brand highlights tuning stability, processing quality, and a very clean integration of functions, making this a premium module designed for the most demanding users.

Two Independent Voices
The SuperKar+ divides its world into two complementary territories: a Solo Voice for melodic lines, attacks, and expressive strokes, and a Chord Voice for chords, doublings, and extensions. Both can be played together or separately, each with its own level, timbre, and behavior.
Attack
Here, the attack doesn't just open the sound; it changes its nature. A short attack evokes plucked or struck strings; a longer one glides into bowed or blown textures, with a much more organic character than a simple classic envelope.
Decay
The Decay controls the sustain of the sound. At low settings, it tends towards tight, dry, almost percussive impacts; the more it's opened, the more the note stretches, resonates, and takes on an almost singing amplitude.
Damp
This is one of the module's great assets. Damp acts at the very heart of the resonance, transforming the sound from a brilliant sheen to a darker, more muffled, more woody response. Modulated by CV, this function gives the playing an astonishingly lively breath.
Timbre
The two TIMBRE switches allow you to change the polarity of the feedback. In positive mode, the module leans towards string timbres; in negative mode, it shifts to hollower, more tubular, almost airy colors. A simple function, but an immediate change in personality.
Harmony and Scale
The Chord Voice is not limited to thickening a signal; it can build true harmonic architectures. Fifteen harmony settings and eight scale types allow you to go from massive doubling to intelligent, more open, more refined, sometimes almost orchestral chords.
Glide, Tune, and Pitch CV
Glide provides portamento, Tune allows continuous or quantized adjustment, and the Pitch CV input opens the door to vibrato, trills, hammer-ons, or fixed shifts over a ±1 octave range. The result: a module that truly knows how to phrase.
Detune and MIDI
Detune adds a random pitch-down to each note of the Solo Voice, just enough to break rigidity and restore grit, movement, a sense of living ensemble. And to go even further, the Solo Voice accepts polyphonic MIDI control with velocity, up to 16 voices.
Audio Inputs and Multiple Outputs
SuperKar+ can also receive audio input to transform its virtual strings or function as a sympathetic resonator. For output, it offers several configurations: Wide Stereo, Narrow Stereo, Split Voice, or Mono. This makes it as inspiring for patching as it is effective in the mix.

The SuperKar+ achieves something rare: offering considerable synthesis depth without ever becoming too opaque or complex. It sings, it snaps, it breathes, it harmonizes, and above all, it makes you want to play rather than just program. For anyone looking for a Eurorack module capable of inhabiting space with strings, resonances, and harmonies of great musicality, this is an essential rack.