Based on the Univibe the KO-Vibe is full of vintage tone. Same incandescent light bulb driving 4 matched LDRs under a copper light shield. High quality film caps throughout and perfectly calibrated for the best watery phase shift. Switchable chorus and vibrato modes. Regulated internal voltage doubler that powers the circuit at 15v just like the originals as well. True bypass. Runs on a standard 2.1mm boss style 9v power adapter. Current draw ~60mA.