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4ms Spectral Multiband Resonator Eurorack Module

26HP Eurorack 6-band Resonator Module with Tunable Scales, Dozens of Onboard Tone-shaping Options, Extensive CV Integration, and Storage for Up to 6 Presets
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Item ID: 4msSMR
4ms Spectral Multiband Resonator Eurorack Module
Price:$475 and 00 cents
$80.00 suggested monthly payment§ with 6 month special financing‡

We Can Get It Fast!

While this isn't an item we normally stock, we can still get it to you as fast as possible due to our great relationship with 4ms. Go ahead and place your order and we'll follow up shortly to let you know when to expect it. Estimated May 2026.

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4ms Spectral Multiband Resonator Eurorack Module
We Can Get It Fast!
Price:$475 and 00 cents
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Energize Your Sound with 6-band Resonance

With its six frequency-band sliders, the 4ms Spectral Multiband Resonator Eurorack module almost resembles a graphic EQ — almost. While each slider carves incoming signal into separate frequency bands, the Spectral Multiband Resonator uses extreme amounts of harmonic resonance to create additional voices above the root. Hands-on controls and extensive CV options make the Spectral Multiband Resonator extremely flexible, allowing you to tune your harmonics to create complex chords and timbres in several creative ways. Overall, you won't find many Eurorack modules that rival the Spectral Multiband Resonator when it comes to getting more out of the ones you already have.

Sound-shaping powerhouse

The sheer scope of what you can do with the Spectral Multiband Resonator is mind boggling. At its simplest, it's a filter-bank effect that adds a series of harmonics to your sound, but that's only the beginning. It doesn't take much to go far beyond that effect, crafting chimes that ring out over your original tone for bell-like effects. You can instantly tune the harmonics to set intervals to create chords, and between switching chords on the fly with the Rotate (scale) knob and controlling the width of the intervals with the Spread knob, you can create continuously shifting melodic elements and more. Best of all, there's enough digital control onboard the Spectral Multiband Resonator that you can store and recall your six favorite settings, so you can experiment as much as you like.

Quickly dial in complex settings

One of the things that Sweetwater synth nuts love about Eurorack gear isn't just that it puts actual knobs and hands-on controls at your fingertips, but it's how extensive that control can be, and the Spectral Multiband Resonator is a superb example of this. Across its 26HP surface, the Spectral Multiband Resonator offers you about two dozen knobs and switches that you can use to quickly define the base of the effect. These include everything from the graphic sliders, which let you judge the contour of all six resonators at once, to the central scale controller, which lets you instantly redefine the tonal relationship between each frequency band and your material.

Extensive CV control plays well with others

Another cool thing about the Spectral Multiband Resonator is that virtually every function includes CV connectivity, so you can craft insanely flexible and complex sounds that enjoy the full benefit of your modulation sources. One great way to use this is to patch an LFO into Band 1 and flip on the CV Slew function. This will cause the Spectral Multiband Resonator to act like a sweeping resonant comb filter, and if you add on Morph, you'll get this amazing cross-fading effect between the frequencies for an additional layer of harmonic complexity. And with envelope outputs and more, the Spectral Multiband Resonator can have a huge impact on other modules down the line as well.

4ms Spectral Multiband Resonator Eurorack Module Features:

  • 6-band resonator effect in a 26HP x 24mm Eurorack module
  • Bands work like a graphic EQ with intense resonance to create harmonic pitches
  • Tune the resonant bands to various intervals to create complex chords
  • Internal modulation and parameters provide a massive amount of sound-shaping power
  • CV integration lets you modulate virtually everything from external modules
  • Store and recall up to 6 setups

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Tech Specs

  • Type: 6-channel Filter
  • Depth: 0.95" (24mm)
  • HP Size: 26HP
  • Power Usage: ±12V DC 110mA, +5V DC 25mA
  • Power Supply: Requires Eurorack case / power supply
  • Manufacturer Part Number: SMR

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Reviews

Spectral Multiband Resonator by 4ms
This is an amazing 6 voice/ channel modular synth resonater. It can be used in so many creative ways for interesting patches. As per usual- the order arrived from Sweetwater right on time. Sales engineer Alex Campos at Sweetwater was helpful as always and gave me some good advice also...really appreciate it!
Music background: jazz saxophonist/ artist