VALVULATOR

MUSICAL INSTRUMENT AMPLIFIERS AND ACCOMPANYING COMPONENTS, NAMELY, SOUND AMPLIFIERS, POWER SUPPLIES, STEREO AMPLIFIERS, PRE-AMPLIFIERS, AUDIO SPEAKERS, LOUDSPEAKER CABINETS, SPEAKER ENCLOSURES; SOUND PROCESSING AND MODIFYING DEVICES, NAMELY, GUITAR AND BASS GUITAR EFFECTS PROCESSORS, NAMELY, DELAY-REVERBERATION AND DISTORTION-EFFECT UNITS FOR THE PURPOSE OF MODIFYING MUSICAL INSTRUMENT SOUNDS