YSAPEXER

Computer expansion boards; Computer component testing and calibrating equipment; Electronic testing equipment, namely, telecommunication line integrity testing apparatus; Musical instrument amplifiers; Digital switching systems comprised of interconnected electromechanical and solid-state power management enclosures with standard and custom keypads for user remote control, the foregoing for use on marine helms and land-based vehicle dashboards; Electric audio playback units; Audio equipment for vehicles, namely, stereos, speakers, amplifiers, equalizers, crossovers and speaker housings