The A4 audio switch series offers a comprehensive range of selector switches, as well as series and ladder type attenuators. These high performance audio switches incorporate a PCB based switch contact system that is specifically designed to meet audiophile requirements for superb sonic performance. All switches feature Elma’s hallmark indexing feel for superior tactile feedback.FeaturesSelector switches, series and ladder type attenuatorsExceptional sonic clarity, smooth and precise switch feelLow-bounce contacts with 3 micron gold platingMotorized, IR controllable available (see Remote Audio PLUS)Customized tapersFor high-end home audio and mixing consolesFree Excel resistor calculator tool available