Abstract: The EKX-2A preamp effects processor utilizes an ADI series digital audio processor for robust signal processing. It features a 7-band PEQ stereo equalizer, USB audio input recognition, mic noise suppression, independent compression, and 3 levels of feedback suppression. The effects channel includes high/low pass filters, separate reverb and echo with 3-band PEQ, and a 7-band PEQ for the mic, all in a fully digital audio processing system for professional vocal effects.