In Stock. 45 Day Lowest Price - 100% Satisfaction Guarantee. The Alesis Vocal Zapper is a stereo vocal remover in an ultra-compact and affordable 1/4-space rackmount chassis. With the ability to precisely remove vocals from any CD or stereo music source, the Vocal Zapper features 16 unique algorithms that allow optimal removal of different types of vocals in various types of mixes. There are two 1/4 inputs and two 1/4 outputs operating at 24-bit conversion and 48kHz sample rate. Internal processing runs at 28-bit.