JUSTPRO

Electroacoustic transducer that captures or senses mechanical vibrations produced by musical instruments and converts them to an electrical signal to be amplified; microphones; amplifiers; audio speakers; pre-amplifiers, namely, a device for an acoustic guitar to adjust tones and enhance amplification

String musical instruments, electrical musical instruments, percussion instruments, music synthesizers, tuners for musical instruments, guitars, violins, electronic organs, musical instrument cases