The Native Audio Niisoo is a Harmonic Equalizer / Filter, a pedal that applies synth-style filtering to a guitar signal. Guitar Pedal X describes it as suited to filter, envelope filter, auto wah, EQ and utility uses, which puts it in territory shared with filter pedals, wah pedals and equalization pedals.1
What it does
The Niisoo's circuit is derived from Analog Synth Technology, and its filters can be used two ways: applied statically as an EQ, or swept from one boundary to the other in either direction as a moving filter effect.1 That sweep behavior is what gives it the envelope filter and auto wah roles, while the static mode works as a harmonic EQ for tone shaping.
The pedal offers Low-pass, Band-pass and High-pass filtering, two Shift Directions, and Latching or Momentary operation.1
Controls
| Control | Function |
|---|---|
| Lower Bound | Sets the lower end of the Shift Range1 |
| Rez | Resonance control1 |
| Upper Bound | Sets the upper end of the Shift Range1 |
| Filter selector | Low-pass / Band-pass / High-pass1 |
| Equalize footswitch | Engages the pedal1 |
Design and background
The pedal's look is derived from a culturally significant 4-band Blackfeet blanket with a relationship to the seasons and stages of life. Guitar Pedal X notes the earthy colors, distinctive knobs and symbol-based labels, and that the theme is not carried through to the footswitch labeling.1
On related circuits, the same review observes that "there are a number of pedals in circulation already which owe much to either the Korg MS20 or Mooferfooger MF-101", placing the Niisoo in a family of synth-derived filter pedals rather than claiming it copies either one.1
"So this pedal is derived from Analog Synth Technology"
What reviewers said
Guitar Pedal X's Stefan Karlsson judged the Niisoo exceptional and kept it on his wishlist, though in a later piece he wrote that he preferred the original version to the current one overall.2 In the site's 2024 roundup of new modutility pedals, the Niisoo appeared at $299.3
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Questions
What does the Native Audio Niisoo do?
The Niisoo is a harmonic equalizer and filter pedal from Native Audio. It applies synth-style filters to a guitar signal, and those filters can be used statically as an EQ or swept between a lower and upper boundary in either direction. Guitar Pedal X describes it as suited to filter, envelope filter, auto wah, EQ and utility uses, so it can sit on a board as a tone shaper or as a moving filter effect.
Can the Niisoo sweep a filter in both directions?
Yes. Guitar Pedal X notes that the Niisoo offers two shift directions, and that filters can be applied statically as an EQ or moved from one boundary to the other in either direction. The Lower Bound and Upper Bound controls set the ends of the shift range, so the sweep can run upward, downward, or simply hold a fixed filter position.
How much does the Native Audio Niisoo cost?
Guitar Pedal X listed the Native Audio Niisoo Harmonic Equalizer / Filter at $299 USD in a December 2024 roundup of new utility pedals. Prices can change over time, so that figure reflects the price as reported at that date.
Is the Niisoo based on the Korg MS20?
Not exactly. Guitar Pedal X says the Niisoo is derived from Analog Synth Technology, and in the same review notes that a number of filter pedals in circulation owe much to either the Korg MS20 or the Moogerfooger MF-101. The review does not state that the Niisoo itself is a copy of either circuit.
Sources (3)
- Guitar Pedal X, Guitar Pedal X, 2024-11-15
- Guitar Pedal X, Guitar Pedal X, 2026-07-23
- Guitar Pedal X, Guitar Pedal X, 2024-12-19