Mutable Instruments Blades Dual Multimode Filter Eurorack Module

PREORDER

A Dual Multimode Filter

A CV-controlled overdrive circuit capable of wavefolding. A clean 12dB/octave multimode filter self-oscillating cleanly across the audio range.

Times two. And this could have stopped here.

For All the In-Betweens…

What sets Blades apart is that options commonly presented as multiple choices (low-pass or high-pass? serial or parallel?) are presented here as a continuum, ready to be explored at the twist of a knob or with a CV. The filter response is continuously variable between low-pass, band-pass and high-pass, and delivers intermediate shelving responses, for more nuanced spectral coloring. A dual crossfader circuit allows the routing between the two filters to smoothly vary from single to parallel to series.

And More!

Originally thought of as a complex filter, Blades turns out to be capable of much more:

• A dual distortion with spectral color control
• An oscillator mixer with crossfading, wavefolding, and enough filtering to clean up the mess
• A voice, using one filter as an oscillator, then distorting, folding it, and filtering it with the second filter
• A complex oscillator capable of FM, PM, and AM

An Essential Overdrive Circuit

• A CV-controlled overdrive stage precedes each of the two filters
• Overdrive response continuously adjustable between soft-clipping and 2-stage wavefolding

Two Rich Multimode Filters

• Clean 2-pole (12dB/octave) state-variable design
• CV-controlled filter response, continuously variable between low-pass, band-pass and high-pass
• CV inputs with attenuverters for cutoff and resonance
• Unattenuated frequency CV input, calibrated for 1V/Oct tracking
• Clean self-oscillation across the audio range, extending into very low frequencies, with constant amplitude
• Modulating the filter response is akin to modulating the phase of the self-oscillation tone

Unique Routing Possibilities

• Continuously variable (and CV-controlled) routing from single to parallel to series
• With a signal patched into filter 2’s audio input, the routing knob and CV act as a crossfader
• Filter 2’s cutoff can be set relatively to filter 1’s cutoff

SPECIFICATIONS

• Fully analog, based on the V2164 quad VCA chip
• Frequency knob range: 8Hz to 18kHz
• Audio input impedance: 30kiloohms
• DC-coupled audio inputs
• Filter mode CV input impedance: 50kiloohms
• Other CV inputs impedance: 100kiloohms
• All CV inputs handle audio-rate modulations