Section 16 Machinery and mechanical appliances; electrical equipment; parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers,and parts and accessories of such articles 85 Electrical machinery and equipment and parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers, and parts and accessories of such articles 85 18 Microphones; loudspeakers; headphones...; electric amplifiers... 85 18 40 Used with electric guitar 85 18 40 ** Used with electric guitar Commodity Code Description 85 18 40 20 000 Used with electric guitar 85 18 40 30 000 Used for public address systems 85 18 40 40 000 Speech training apparatus for deaf persons 85 18 40 90 000 Other Audio-frequency electric amplifiers