Premier Guitar features affiliate links to help support our content. We may earn a commission on any affiliated purchases.

Source Audio Ultrawave Review

souce audio ultra wave distortion fuzz pedal

Could this distortion machine be too powerful for its own good?

Mind-boggling number of options. Excellent modulation tones.

Mind-boggling number of options. Limited control without the desktop or mobile editor.

$249

Source Audio Ultrawave Multiband Processor
sourceaudio.net

4
4
2.5
3.5

Source Audio's new Ultrawave Multiband Processor lives where distortion, tremolo, and EQ all intersect. It can generate everything from lo-fi fuzz freakouts to synth-pop pulses and beyond. At first glance, the control interface seems simple enough: a four-knob, one-toggle setup. However, those initial assumptions would grossly underestimate the power that lies underneath the hood, and the complex tone recipes that are possible.


Source Audio's processing-intensive pedals are always pushing the boundaries of control and tweakability. The key to the Ultrawave is its multiband capabilities, which enables the pedal to split a signal into 1, 2, 3, 4, 8, or 10 frequency bands and process each one individually. There are 37 different band-splitting options and 44 types of distortion inside the Ultrawave. By my calculations that means there's just enough combinations to get through a blues jam, a Muse tribute gig, and an after-hours space-psych session in the same night and still have scores of unexplored tones left over.

All clips were recorded with a Fender Stratocaster and a Revv D20 loaded with a Two-Notes virtual 1x12 cab and 57-style microphone.

Playin’ With the Bands

Hooking your stomp up to your computer for deeper editing is essential to getting the most out of the Ultrawave, because there are loads of editable parameters that are not accessible otherwise. When you first open the editor, you face a somewhat imposing array of options. The heart of the editor is the distortion controls section, which allows you to choose distortion type, as well as band-splitting and tremolo options. But as scary as it might look at first, it was big fun simply cycling through the distortion options and moving the sliders up and down looking for happy accidents. And because the Ultrawave allows you to manipulate frequency groups individually, you can, for instance, dirty up your low end while allowing high-end information to ring cleanly. I also loved tones with a cleaner midrange and a filthy low end. The editor even has a very powerful and flexible compressor. The number of possibilities is impressive.

It was big fun simply cycling through the distortion options and moving the sliders up and down looking for happy accidents.

Distortion highlights included the foldback and octave settings. Foldback-style distortion (where the peaks of distorted waveforms are inverted rather than regularly clipped) isn't that common in guitar pedals. It's a cool effect that can lend a throbbing intensity and extra high end to your signal, among other things. Meanwhile, in the octave settings, you can cop subtle vintage-style tones or full-on freakouts with fuzz and feedback. According to Source Audio, the octave effects are created using a proprietary technology rather than traditional full-wave rectification. Determining precisely what affect Source Audio's octave-generating methods have on the output is difficult to determine, but I found the audible results to be unusually smooth and well suited to the complex distortion and tremolo effects.

The multiband tremolo also offers many tweaking options. You can place the tremolo either before or after the dirt and choose between a host of different band styles. For me, the more unsettling the rhythm, the better, and some modulations are intense enough to make you lose your musical lunch—in the very best way! Each band style offered non-traditional options that drove to create stuttering loops.

I'd be remiss if I didn't mention that the Ultrawave also has extensive I/O options for those who want to experiment with the stereo spectrum, utilize the pedal's two independent channels, or alter parameters on the fly with full expression-pedal control. We're used to Source Audio packing a ton of features into their pedals, but kudos are due to the development team for creating such a unique and varied effect in a standard-sized stomp.

The Verdict

Though extreme and unusual effects are plentiful in the Ultrawave, its tone palette is broad. Finding a sound that suits you is just a matter of dedicated tweaking. It's an extremely powerful sound processor, but that power does come with a rather hefty learning curve once you dive into the editor, which is probably more essential to getting the most from the pedal than traditionalists would like. Thankfully Source Audio has a free, easy-to-download collection of Ultrawave presets and an active community of users with their own presets and tips to share. If you live on the bleeding edge of distortion sounds and enjoy mixing modulation, then the Ultrawave might be the best thing going.

There’s so much to explore when you decide to dip your toes into altered tunings.

Read MoreShow less

Introducing Torpedo Reload II - Two Notes Audio Engineering's latest groundbreaking reactive load solution, featuring twin-channel operation, multi-impedance compatibility, and continuous attenuation. With a CelestionĀ® Approved Load Response and 215W per channel power amplifier, Reload II redefines backline control.

Read MoreShow less

On That’s the Price of Loving Me, ā€œWe’re Not Finished Yetā€ is a love letter to Wareham’s 1968 Gibson ES-335.

Photo by Mario Heller

The singer-songwriter-guitarist, known for his time with indie rock heroes Galaxie 500, Luna, and Dean & Britta, reunites with producer Kramer on his latest song-driven solo effort, That’s the Price of Loving Me.

ā€œYou want there to be moments where something unexpected hits you,ā€ says Dean Wareham. ā€œThey’ve done studies on this. What is it in a song that makes people cry? What is it that moves you? It’s something unexpected.ā€

Read MoreShow less

The Delecaster offers a passionate Mexican-culture spin on the tried-and-true Tele model.

Drawing on the appointments of the traditional acoustic instruments that have been the Delgado family’s stock-in-trade for three generations, a new take on the Tele is born.

Growing up as the son and grandson of luthiers renowned for their concert classical and flamenco guitars, I was immersed in the world of handcrafted instruments from a young age. While I learned the traditional techniques passed down through generations, my musical tastes spanned a wide spectrum, from the soulful melodies of boleros and mariachi to the raw energy of punk and folk. This diverse musical upbringing instilled in me a deep appreciation for the unique character and personality of different guitar styles.

Read MoreShow less