Loudspeakers; Microphones; Woofers; Audio equalizer apparatus; Ear phones; Electrical pickups for use with musical instruments; Loud speakers; Loudspeakers with built in amplifiers; Sound amplifiers; Sound mixers; Speaker microphones; Virtual reality headsets

Face masks for use by health care providers; surgical masks; disposable face masks for protection against viral infection

COMPUTER PROGRAMS AND INSTRUCTION MANUALS SOLD THEREWITH, FOR USE IN ENGINEERING APPLICATIONS