The Neptunian Phaserang is a phaser guitar effects pedal by Interstellar Audio Machines, and it is the company's first modulation pedal. It is a 4-stage analog phaser, built in the U.S.A., designed to produce a wide range of phaser sounds, from subtle, shimmering effects to deep, spacey sweeps1.
If you are new to phasers, the effect works by sweeping notches through your signal, producing the swirling, jet-like sound heard on countless records. The Neptunian Phaserang sits in the phaser family alongside related modulation effects like flanger, chorus, and vibrato pedals.
What it does
Interstellar Audio Machines describes the Neptunian Phaserang as a 4-stage phaser modulator. The number of stages in a phaser's circuit shapes how many notches move through your signal, which is what gives the effect its character. With four stages, the pedal covers what RockBoard's PedalPedia describes as a wide range of phaser sounds, from subtle, shimmering effects to deep, spacey sweeps1.
Controls
The pedal includes four controls to shape the effect1:
| Control | What it does |
|---|---|
| Volume | Sets the pedal's output level |
| Rate | Sets the speed of the phaser sweep |
| Depth | Sets how far the sweep travels |
| Resonance | Emphasizes the swept frequencies |
The maker's product page lists these controls as Volume, rate, depth, and resonance, the standard set for a phaser of this type1.
Power
The Neptunian Phaserang runs on 9V DC, center negative, the common standard shared by most pedals, so it will work with a typical pedalboard power supply1.
Videos
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The Tatted Bald Guy
Questions
Is the Neptunian Phaserang analog or digital?
The Neptunian Phaserang is an analog pedal. Its circuit type is listed as analog on the maker's product page, meaning the phasing is produced by an analog circuit rather than digital processing. Players who want to keep an all-analog signal path on their board can run it without worrying about conversion, and it behaves like other analog phasers in how it responds to playing dynamics and pickup changes.
What power supply does the Neptunian Phaserang use?
The pedal runs on 9V DC with a center negative plug, the standard arrangement used by most guitar pedals. A regular pedalboard power supply or a 9V DC adapter with a center negative barrel will power it. As with any center negative pedal, make sure the supply is not a center positive one before connecting it.
Where is the Neptunian Phaserang made?
The Neptunian Phaserang is made in the U.S.A. by Interstellar Audio Machines. The maker describes it as crafted with precision by IAM, and it is the company's first modulation pedal.
What does the resonance knob do on a phaser?
On a phaser, the resonance control sets how much the swept frequencies are emphasized. At low settings the sweep stays gentle and even, while turning it up accentuates the moving notch frequencies, producing a more pronounced, sometimes dramatic sweep. On the Neptunian Phaserang, Resonance is one of four controls, alongside Volume, Rate and Depth, for shaping the effect.
Sources (1)
- Neptunian Phaserang by Interstellar Audio Machines, RockBoard PedalPedia, 2026