The Morley PVO+ Volume Plus brings together stage-ready playability and studio-grade audio fidelity with an electro-optical design, selectable minimum volume operation as a rhythm or lead, and easy-to-ready LED display. Usable with guitar, bass, keys, or any electrical instrument, the PVO+ offers some of the smoothest audio taper on the market for room-filling swells and nuanced scalebacks ideal for post-rock, psych, or experimental.