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Amplifiers (Qtbad)

Vehicles and equipment (Q)
    Equipment (Qt)
         Use For: Apparatus; Devices
         Related Term (Associative): Control devices (Dcj); Communication devices (Dsg); Testing equipment (Gu); Structural parts (Pbp); Building materials (Rbm)
        Types of equipment (Qtb)
            Acoustic equipment (Qtba)
                Acoustic generators (Qtbab)
                Amplifiers (Qtbad)
                In vehicle annunciators (Qtbag)
                     Use For: Annunciators in vehicles
                Microphones (Qtbam)
                Public address systems (Qtbap)
                Tape recorders (Qtbat)