The Nux Scream Bass is an analog overdrive pedal designed specifically for bass guitar, made by Nux. Where a guitar overdrive can thin out a bass signal, the Scream Bass is built to preserve low-end fundamentals while adding gritty midrange saturation, and its blend control lets you keep your clean low end running underneath the drive1.
Nux describes it as part of the company's effects range for bass players, in a compact format aimed at bass pedalboards1. At the time of writing it is listed as coming soon at Sweetwater1.
An analog overdrive voiced for bass
Overdrive is a mild-to-medium form of distortion that pushes a signal into clipping, adding harmonics and sustain. On bass, the problem is that many overdrive circuits, including those inspired by the Tube Screamer, roll off low frequencies as part of their design. Bass-specific versions modify that approach to keep the bottom end. Cusack Music, for example, describes its own Screamer Bass as "a Tube Screamer-inspired overdrive just like our renowned Screamer V2, but modified to preserve" the low end for bass3, and the same thinking applies across bass-voiced drives.
The Scream Bass takes the parallel route: its circuit preserves low-end fundamentals while adding gritty midrange saturation, so the drive character sits in the mids where it cuts through a mix, while your sub and low-mid content stays intact1. Nux's Thai product page confirms the pedal uses an analog circuit and is designed for bass guitar2.
The controls: Gain, Tone, Level and Blend
The pedal gives you four knobs to shape the overdrive2. The gain and tone controls shape the overdrive character, level sets the output volume, and blend handles the clean-and-driven mix1.
| Control | What it does |
|---|---|
| Gain | Shapes the overdrive character, setting how hard the signal is driven1 |
| Tone | Shapes the overdrive character, adjusting the tonal balance of the drive1 |
| Level | Sets the output volume of the pedal1 |
| Blend | Mixes clean and driven signals for parallel distortion1 |
Nux's own product page describes the control set slightly differently, listing Level, Drive and a 2-band EQ with Low and High controls as the four knobs2. The two descriptions disagree on the exact layout, so if you are comparing before buying, it is worth checking the unit itself when it reaches retailers.
How the blend control works
The blend control mixes clean and driven signals for parallel distortion1. In practice this means the pedal splits your signal in two: one path gets the overdrive treatment, the other stays clean, and the blend knob sets the balance between them. Run the blend low and you get mostly clean bass with a layer of grit on top; run it high and the driven signal dominates.
This is the feature that makes a bass overdrive usable in a band context. A conventional overdrive with no blend can leave the bass sounding thin once the drive is engaged, because the clipping that creates the harmonics also compresses and rounds off the fundamental. With a blend, the clean path carries the weight while the driven path carries the aggression, and you can find a balance that keeps both.
Power and size
The Scream Bass runs on 9V DC with center-negative polarity and draws 11mA, which is light enough to share an isolated output or a daisy chain with plenty of headroom on most power supplies1. It also accepts a 9V battery or a 9V AC adapter with a negative tip, so it can run without a supply if you prefer2.
The pedal weighs 270g2. NuX positions it as a compact format for bass pedalboards1, so it occupies a standard small-pedal footprint rather than a mini one.
The pedal is listed as coming soon at Sweetwater at the time of writing, so availability may still be limited depending on when you are shopping1.
Where it sits among bass overdrives
Bass overdrives generally solve the low-end problem in one of two ways: voicing the circuit itself to keep the lows, as Cusack does with its Screamer Bass3, or blending a clean path with the drive, as the Scream Bass does1. The blend approach gives you the most control, because you decide how much of each you hear. If you are shopping in this category, the overdrive and bass pedals pages cover the wider field, including pedals that lean harder into fuzz territory.
Videos
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Questions
Can the Nux Scream Bass run on a battery?
Yes. The pedal runs on a 9V battery or a 9V AC adapter with a negative tip, so it works either way depending on how your board is set up. A battery makes it usable without a power supply, while the adapter suits a fixed pedalboard.
Is the Nux Scream Bass true bypass?
Yes, it uses true bypass switching. When the pedal is off, your signal passes through without the circuit coloring it, which matters if you run long cables or several pedals in a chain.
How does the blend control work on a bass overdrive?
The blend knob mixes your clean signal with the driven signal in parallel. That means you keep the low-end fundamentals of your clean bass tone underneath the overdrive, so the grit sits on top of your note definition instead of replacing it. It is a common approach on bass drives because full-strength distortion can thin out the bottom end.
How big is the Nux Scream Bass?
The enclosure measures 122mm long by 72mm wide by 47mm high, and it weighs 270g. That is a compact format that fits easily on a bass pedalboard alongside other standard-size pedals.
Sources (3)
- Scream Bass, PedalFilter
- Effects Scream Bass, Nux Thailand, 2024-02-05
- Screamer Bass Overdrive Pedal for Bass Guitar, Cusack Music
