If you're a Uni-Vibe fan you've probably noticed you have a few basic options when it comes to vibe pedals: True Uni-Vibe clones, phaser-based vibes, and digital modelers. Modelers are dependent on the sophistication of their algorithms, which varies and is a matter of debate. Phaser-based vibes, while generally cheap and convenient, don't produce the deep, pulsing throb that is the hallmark of a true Uni-Vibe and, in reality, still sound more like phasers than vibes. And true clones which, while many capture the classic throb of a real Uni-Vibe, they all depend on a famously inconsistent and sometimes unreliable lamp and driver circuit, they can't run on a 9V battery and often require special power adapters, and typically give you control over only a few standard parameters - speed, intensity and volume.