Shruthi-1 & Custom wooden case » Shop » Exclusive Offers » Shruthi-1 & Custom wooden case

For sale is a assembled and customized Mutable Instruments Shruthi-1 synthesizer and a custom made, CNC-milled wooden case.

The case is made from beech planks, cnc-milled, and coated with high gloss, antique, polyuretan laquer.

Inside the case is a Shruthi-1 Synthesizer, with an SMR-4 filter board. The four CV-inputs of the Shruthi are wired to two analog potentiometers (CV1 & 2) and one Roland-style pitchbender/modulation-stick (CV3 & 4).

Shruthi-1 synthesizer:

The Shruthi is a hybrid digital/analog monosynth. Its hardware design is deceptively simple, but the sonic range is wide: sometimes grungily digital like a PPG-Wave, fat and funky like a SH-101, videogame-y like a Commodore 64, weird and warm like an ESQ-1 ; but more often than not, truly original.


An 8-bit microcontroller plays the role of the two main oscillators + sub-oscillator. This allows the generation of (aliasing-free) classic analog waveforms, but also wavetable/transwave synthesis and a trove of weird digital algorithms (sinewave bitcrushing, formant synthesis, phase distortion, bit toggling, XOR modulation).

… and Analog

Beyond this point, everything is analog. Most of the Shruthis are built with the SMR-4 mkII filter, a warm 4-pole “modern analogue” low-pass filter (no vintage IC). But you are in no way limited to this! The filter section of the Shruthi is on its own board and can be easily replaced. Many alternative filter boards are available: a mighty dual multimode filter with serial/parallel routing; a whacky and low-fi digital filter with built-in effects; a clone of the aggressive Polivoks filter; a complex 4-pole multimode filter inspired by the Xpander; or a MS-20 style LPF with a built-in low-fi delay. From silky-smooth to squelchy or fat: pick the filter that matches your personal taste best.

The Shruthi has an audio input: external signals can be processed by its analog section, under the control of the digital LFOs, sequencer and arpeggiator for crazy gating and re-enveloping effects. A perfect way of warming up the sound of your favorite VA or cheesy organ!

Product in stock (1 remaining)

Price: €1,200.00

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