The soulful-looking dude gracing the aluminum housing hints at what’s in store when you plug in the Soul Vibe. Uni-Vibes are known for their uniquely chewy phasing sound, and the Soul Vibe’s wide-ranging Intensity control makes it easy to produce everything from subtle to seriously heavy effects. At slow to medium speeds, and with the Intensity control near the halfway point, the textures are deep and, ahem, vibey with great psychedelic color. Faster Speed settings yield more rotary-style textures, while higher Intensity levels really bring out the inherently wobbly sound of this classic effect.