The JOYO JF-328 Nebulous is a compact analog phaser pedal. JOYO describes it as "a classic analogue phaser" and says it can cover everything from "a slight movement in your lead sound or deep and watery phase sweeps for wide cleans." It sits in the phaser family of effects, which sweep a notch filter through your signal to produce that familiar whooshing movement.1
Controls
The Nebulous goes beyond the single Speed knob found on many small phasers. JOYO says that "in addition to Speed, you can also control Width and Feedback," giving players a hand in how fast the sweep runs, how broad it is, and how pronounced the phase effect becomes.1
| Control | What it does |
|---|---|
| Speed | Sets the rate of the phased sound1 |
| Width | Shapes the breadth of the phase sweep1 |
| Feedback | Adjusts the intensity of the effect1 |
Power and connections
The pedal runs on a DC 9V adapter and draws 20 mA of current, so it fits comfortably within the budget of any output on a standard pedalboard power supply. JOYO's specifications list no battery option. Input impedance is 510k Ohm and output impedance is 470 Ohm.1
JOYO's product page lists power as a DC 9V adapter only, with no battery operation mentioned, so plan to use an adapter or power supply output.
Size and on the board
The JF-328 is a compact pedal that takes up little room on a pedalboard. A PDF manual for the JF-328 is available as a download from JOYO's product page.1
Related JOYO phasers
JOYO's wider range includes other phasers that players often compare alongside the JF-328, among them the Joyo Vintage Phase and the Joyo JF-06. The JF-328 itself keeps a compact control set: in addition to Speed, you can also control Width and Feedback, and since it is all analog, JOYO made it True Bypass.1
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Questions
Is the JOYO Nebulous an analog phaser?
Yes. JOYO describes the JF-328 Nebulous as a classic analogue phaser, and the company notes that because the circuit is all analogue, it is built with true bypass switching. That means the effect sits entirely in the analogue path and, when switched off, your guitar's signal passes through without digital conversion.
What power supply does the JOYO Nebulous need?
The Nebulous runs on a DC 9V adapter and draws 20 mA of current. JOYO does not list a battery option for the pedal, so plan on a centre-negative 9V supply or a spot on your pedalboard power brick.
Does the JOYO Nebulous run on a battery?
JOYO's product page lists power as a DC 9V adapter only, with no battery compartment mentioned. For a pedal this small, an adapter or a output from a pedalboard power supply is the way to run it.
How big is the JOYO Nebulous?
JOYO lists the JF-328 Nebulous at 73 mm long, 43 mm wide and 50 mm high, weighing 220 g. That compact footprint is designed to save room on a crowded pedalboard.
What series is the JOYO Nebulous part of?
The Nebulous is part of JOYO's JF-numbered pedal range, carrying the model number JF-328. JOYO also released a related mini phaser called the Nebulous Phase in its IronMan series in 2016, which shares the Speed, Width and Feedback control layout.
Sources (1)
- JF-328 Nebulous_JOYO, JOYO, 2019-12-12
