The TRETTITRE Retro Wall-Mounted Ambient Audio System is a modular home audio setup that puts vinyl, CDs and cassettes on the wall instead of the TV unit. What Is the TRETTITRE Retro Wall-Mounted Ambient Audio System? The TRETTITRE Retro Wall-Mounted Ambient Audio System is a modular hi-fi concept that gets your music gear off the cabinet and onto the wall. Where to Buy the TRETTITRE SystemThe TRETTITRE Retro Wall-Mounted Ambient Audio System lives on Kickstarter under the title “TRETTITRE: Retro Wall-Mounted Ambient Audio System”. TRETTITRE Retro Wall-Mounted Ambient Audio System FAQsWhat is the TRETTITRE Retro Wall-Mounted Ambient Audio System?