DUMBLE

ELECTRICAL APPARATII FOR USE WITH GUITARS AND OTHER PURPOSES-NAMELY AMPLIFIERS, LOUDSPEAKERS, PREAMPLIFIERS, POWER AMPLIFIERS, SIGNAL PROCESSING AMPLIFIERS, AND REVERBERATION UNITS; AND COMPONENTS AND ACCESSORIES FOR SUCH ELECTRICAL APPARATII-NAMELY, AMPLIFIER CORDS, FOOT PEDAL CONTROLS, SWITCHES, TRANSFORMERS, AMPLIFIER COVERS, AMPLIFIER VOLUME AND TONE CONTROLS, AND SPEAKER CABINETS