9 Amplifiers; Electric and electronic effects units for musical instruments; Electronic effect pedals for use with sound amplifiers; Electronic products for the generation, measurement, and analysis of audio signals, namely, audio analyzers; Electronic products for the manipulation of the frequency, time, and amplitude characteristics of audio signals, namely, audio processors; Electronic scalers for audio and video signals; Electronic sound mixing, processing and synthesizing apparatus; Electronic switchers for audio and video signals; Frequency synthesizers; Signal processors for audio speakers; Sound effect pedals for musical instruments