On the [Gear page](http://www.billyduffy.com/gear/whirlwind-the-bomb-pedal/) of Billy Duffy's website, he says, "It’s not an effect but a volume pedal. It literally just boosts the signal from the strings through to the amplifier, it sounds ridiculous to say it, a bit ‘Spinal Tap,' but it’s a pedal that’s really, really useful. For example if I’m playing a really heavy section of a song and I want to go straight into a clean section sometimes you’ll lose the volume so this pedal helps by keeping the volume whilst the tone changes.”more
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