FabFilter Volcano

This filter plug-in certainly has an explosive name, but is it good enough to develop a hot reputation?

FabFilter's previous effort, Fabfilter One, was a solid demonstration of how good software synthesis has become.

It combined a near perfectly-modelled oscillator with a distinctly serious self-oscillating analogue-style filter.

This same filter has been used to create FabFilter's explosive-sounding Volcano.

In fact, this stereo filter effect plug-in contains two of these filters, plus modulation options, an amplitude-triggered envelope generator and a nifty GUI.

So, has that fabulous filter algorithm been given a proper opportunity to shine?

In use

Volcano certainly isn't light on features. There are seven selectable characteristics for each filter – the original FabFilter One mode plus six enhanced processes.

These add varying degrees of distortion and self-oscillation to the signal. All seven filter types offer high-, low- and band-pass modes, with a selectable 18, 24 or 48dB roll-off slope.

The filters can be routed in serial or parallel configurations, and both feature independent pan controls. These enable you to apply varying degrees of filtering to both the left and right channels of a stereo source and create a number of effects.

They range from simple stereo separation and enhancement right up to glass-shattering self-oscillation!

Two tempo-syncable LFOs – sporting triangle and square waveforms but, sadly, no sine – can be routed to the frequency, peak or pan.

The amplitude-triggered envelope generator, meanwhile, offers good scope for on-the-fly, velocity-controlled filter movements.

There was no option to trigger the EG via MIDI in the Volcano 1.0, but it's been added with version 1.1.

The technology behind FabFilter's filter algorithm is impressive and the six refined filter characteristics in Volcano are testament to the developers' eye for detail.

It's very different from the competition, being remarkably smooth but also capable of some serious sonic mangling. But is this the ultimate filter module?

If you want a more feature-packed filter, PSP Nitro would be the better bet, but for total smoothness, analogue warmth and screaming self-oscillation, you'll struggle to find better than Volcano.

MusicRadar Rating

4 / 5 stars

Wide range of filter characteristics. Capable of very gentle filtration or full-on mangling. Sounds incredible.


Not much cheaper than the superb PSP Nitro. Sine-less LFOs.


It faces stiff competition, but you can't fail to be impressed by Volcano's sweet sound.

Effects Type


OS Requirements

Apple Mac OS X 10.3 or later Microsoft Windows 2000 Microsoft Windows 98 Microsoft Windows ME Microsoft Windows Vista Microsoft Windows XP



Plug-in FX Type


Review Policy
All MusicRadar's reviews are by independent product specialists, who are not aligned to any gear manufacturer or retailer. Our experts also write for renowned magazines such as Guitarist, Total Guitar, Computer Music, Future Music and Rhythm. All are part of Future PLC, the biggest publisher of music making magazines in the world.

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