Educational Institutions with Professional AV Products and Services since 1969. Since 2003 we have combined 4 well known and successful AV companies, Winnipeg AV Services in Manitoba, Nagels AV Services in Saskatchewan, Nova Audio Visual in Edmonton, and Apex AV Rentals in Alberta, and then rebranded ourselves as Evolution Presentation Technologies – Western Canada’s Premier supplier of Audio Visual System Integration, Videoconferencing, AV Rentals and Staging Services and AV product sales.