Not your dad’s tremolo—or anyone else’s.
RatingsPros:Unique distortion/modulation effects. Cons: Tricky to use. Tones may get tiring. Poor documentation. Street: $190 Nunomo Grain shop.nunomo.com | Tones: Ease of Use: Build/Design: Value: |
Nunomo calls its Grain a tremolo pedal. It is, in the sense that it modulates the amplitude (volume) of your signal. But the sonic results aren’t like anything you might expect from a conventional trem effect.
Here, the modulating signal is a fast square wave. This is hard, on/off modulation at rates that begin where most trem effects max out. Grain doesn’t do slow, throbbing sounds. Instead, the speedy modulation generates a unique distortion timbre. “The original idea,” says Nunomo, “came from how a human shouts. In rock or metal songs, people shout like ‘goaaaahhh!’”
A Fast Flicker
This sonic stroboscopic flicker reminds me of the throaty, trilling sound Spanish speakers produce when properly pronouncing double-r words like torre and borracho. Since Nunomo creates the effect by nixing portions of waveform cycles, the modulation rate varies according to pitch and modulates faster at higher pitches. If, say, you bend a note, you can hear the rate change as you stretch and release the string. I suppose it sounds something like a heavy metal singer shouting “burrrrrrrr-ito!”
The pedal also includes gain and volume controls capable of overdriving an amp on their own. But, as Nunomo points out, the Grain sounds most dramatic when placed after a separate distortion or fuzz pedal. (I used a Tone Bender MkII clone for the demo clip.) The Grain doesn’t change your fuzz pedal’s innate timbre. It just sort of flutters it.
Meanwhile, the process also generates sub-tones between two and four octaves below the pitch you play. Many settings are reminiscent of the old MXR Blue Box effect heard on Led Zeppelin’s “Fool in the Rain.” Like a Blue Box, the Grain is clearest when playing above the 12th fret. Below that, the sub-octaves become indistinguishable. Anything other than single notes (and sometimes fifths) sounds pretty sloppy. But hey—depending on how much noise you like in your rock, “indistinguishable” and “sloppy” might suit your style and tastes.
Mix and Match
The Grain’s additional controls let you vary the pedal’s core timbre. A trio of knobs activates the effect—each one generating sub-tones in a different octave. A 3-position transition toggle controls the intensity (i.e., the choppiness) of the effect. There’s also a much-needed mix knob to blend straight and effected signal. A little effect goes a long way here.
In fact, at aggressive mix levels I find the Grain’s tones fatiguing. But having said that, the effect could be deployed to good use in small doses. For example, fluttering the last phrase of a solo heading into a chorus might lend the perfect touch of drama and eccentricity. The Grain is ready for such applications: a second mini-toggle activates a momentary mode, wherein the effect is only applied while holding down a foot switch.
Dialing It In
I initially found the Grain difficult to use. Even with the one-page manual, I simply couldn’t get it to produce modulation effects, though the gain controls worked as expected. We contacted the manufacturer and Nunomo responded with a diagram depicting a starting position for the knobs—one that doesn’t appear in the manual. It turns out the three depth control knobs aren’t exactly depth controls. They’re more like trimpots that provide one ideal setting, as opposed to a range of usable ones. In other words, they do nothing useful across most of their range.
The same is true of the wet/dry mix pot. Fully counterclockwise, it outputs an effect-only signal. With the knob raised to around 10 o’clock, you get maximum dry. Nothing else happens in the upper two-thirds of the knob’s range.
The Grain is solidly made, with a tidy circuit board and enclosure-mounted pots and jacks. The pedal lives in a standard BB-sized box and runs on the usual 9V power supplies. There is no battery compartment.
The Verdict
Listen to the accompanying demo clip and to others online. (All feature similar sounds.) Do you think these tones could find a place in your toolbox? Well, that’s your verdict. To my ear, the Grain’s effects could be effective in short bursts. Your aesthetics may differ. I didn’t dig the fact that four of the six knobs only do useful things in a fraction of their range, or that the one-page manual failed to get me up and running without frustration. Again, your mileage may vary.
Watch the Review Demo:
A tone slicing tremolo pedal.
Irvine, CA (November 6, 2017) -- The original idea came from how a human shouts. In rock or metal songs, people shout like “GOAAAAHHH!”. We were thinking of how we can represent the feeling and came up the idea which is pitch-synchronized, extremely fast tremolo pedal. This pedal slices your tone but still it is possible to keep the original tone, because it’s tone slicing not tone bending. This pedal introduces another way to make crazy sounds!
This pedal offers the following features:
- Tremolo speed is changed by pitch of the tone.
- “2”, “3” and “4” knobs defines how deep you want to cut the sound (Tremolo depth). Number correspond to tremolo speed (2,3 and 4 octave lower)
- Transition speed can be changed (fast, medium and slow).
- There are two modes: Always On mode and Momentum mode (controlled by switch).
- Input Gain knob makes crisp overdrive tone.
- Designed to combine with other overdrive/distortion pedal in front. Player can keep their favorite overdrive tone.
- Hand painted and hand assembled in USA.
- True bypass on/off switch
- 9-volt operation and standard DC input
Grain carries street price of $190.00 each. It’s available only at the online store.
Watch the company's video demo:
For more information:
Nunomo
Variable voltage and clipping enhance the tone potential of this low-gain OD.
In theory, any good, transparent overdrive pedal should enhance rather than transform the sound of your rig. That’s why they call ’em transparent, right? Essentially, the low-gain Limbo Overdrive is a transparent overdrive pedal. It’s extremely touch sensitive and amp-like, so you can imagine a lot of what Limbo sounds like with your own rig. But feel is what really sets most top-tier overdrive pedals apart. And this is where the Limbo packs something a little different and immeasurably useful.
Built to Roam
The Limbo Overdrive is well built. The footswitch feels rugged, the chassis-mounted pots feel stout to the turn, and the metal chassis will be as durable feeling as anything else on your pedalboard. The all-analog circuit can be run at 9 to 12 volts for a little extra headroom if you want it. There is no battery option, which may be a bummer for some players.
Controls include a familiar complement of volume, drive, and tone knobs for dialing in grit and output. And each of those controls has great range that makes the pedal musical in many applications. Limbo has plenty of output on tap to run as a clean boost. As a stand-alone overdrive, it delivers everything from bluesy breakup to cranked vintage-style amp wailing with all it’s got. The pedal is also responsive to picking dynamics and gets clean when you attenuate guitar volume.
The tone knob works much like the passive controls in a guitar or an old blackface Fender amp. All the way up, you get straight, unadulterated overdrive signal. Rolling it back cuts high-end content. But to the Limbo’s credit, it never sounds muddy. And it was particularly helpful for taming the top end of a Telecaster’s bridge pickup without sacrificing cut and definition.
Ratings
Pros:
Huge array of overdrive tones. Easy-to-dial-in response and feel.
Cons:
No battery option.
Tones:
Ease of Use:
Build/Design:
Value:
Street:
$140
Nunomo Limbo Overdrive
shop.nunomo.com
The Limbo also works wonderfully when stacked with other dirt devices. The Nunomo became a singing sustain machine with a push from my Voodoo Lab Sparkle Drive Mod pedal. Running it in front of my 5-watt, class-A Blackheart BH5H amp and a preamp pedal set at the edge of breakup added more harmonic content and weight to single notes and chords.
Variable Voltage Means More Feel
Additional keys to Limbo’s dynamic sound and feel are two knobs labeled positive and negative, which control the pedal’s clipping voltages and whether the clipping is symmetrical or asymmetrical. While the physics behind symmetrical clipping can be tricky to explain (and deserves its own story), the sonic effects of various settings are much more obvious. Clipping becomes sharper when you turn the dials counterclockwise, and softer when you turn the dials clockwise. I also found that with the knobs pulled all the way back, the pedal sounds much more open and airy—like a high-headroom amplifier. Every picking nuance becomes more pronounced, and highs have more sparkle and clarity. Rolling the positive and negative knobs all the way up results in a more rounded, warm, and compressed quality, better suited for thick lead tones. They’re a rewarding and intuitive way to dial in the perfect response for your playing style and can shift the character of your amp in sometimes subtle, but still very tangible, ways.
The Verdict
Many of us already have great overdrive pedals that we’re very fond of, but leave us wanting just for a little more compression, top-end clarity, or a bit more headroom. The Limbo rarely, if ever, left me longing for more of those attributes. And while the pedal’s low-gain transparency means metal heads and other aggressive tone fiends may be underwhelmed, it’s hard to imagine any other players who wouldn’t be intrigued by Limbo’s wide-open overdrive-shaping potential.