9 AMPLIFIERS AND SIGNAL PROCESSING EQUIPMENT, NAMELY, HARDWARE AND SOFTWARE DEVICES IN THE NATURE OF SIGNAL PROCESSORS FOR AUDIO MANIPULATION AND PROCESSING, AND MUSICAL INSTRUMENTS; AUDIO SIGNAL PROCESSING AND RECORDING EQUIPMENT, NAMELY, MULTICHANNEL RECORDING AND PLAYBACK DEVICES IN THE NATURE OF SOUND MIXERS, MULTICHANNEL ANALOG CIRCUIT-BASED SIGNAL PROCESSORS FOR FREQUENCY AND DYNAMICS MANIPULATION OF THE AUDIO SIGNAL, AND TAPE- AND DISC-BASED AUDIO RECORDERS, ALL FOR TAPE, DISC, SOFTWARE AND RECORDS; AUDIO SIGNAL PROCESSING AND RECORDING EQUIPMENT, NAMELY, MUSICAL INSTRUMENT PREAMPLIFIERS, AMPLIFIERS FOR SOUND, AUDIO FREQUENCY EQUALIZERS, ELECTRICAL SOUND EFFECTS UNITS, NAMELY, TIME- AND FREQUENCY-BASED AUDIO SIGNAL PROCESSORS IN THE NATURE OF CHORUS, EQUALIZERS, DELAY LINES, DISTORTION AND OVERDRIVE EFFECTS, REVERB, ECHO, PHASE-SHIFTING, FLANGER EFFECTS, GRANULAR SYNTHESIS EFFECTS, AND BITRATE MANIPULATION, ANALOG AND DIGITAL SIGNAL PROCESSORS; ELECTRIC SOUND PROCESSING EQUIPMENT, NAMELY, ANALOG AND DIGITAL SIGNAL PROCESSORS FOR AUDIO SIGNALS IN THE FIELDS OF MUSICAL PERFORMANCES AND SOUND RECORDING, SOUND MIXING AND AUDIO PLAYBACK; MICROPHONE PRE-AMPLIFIERS; FILTERS AND FREQUENCY EQUALIZERS FOR AUDIO SIGNALS, NAMELY, FILTERS AND FREQUENCY EQUALIZERS FOR AUDIO LEVEL CONTROL; AUDIO SIGNAL COMPRESSORS AND EXPANDERS; ANALOG AND DIGITAL AUDIO RECORDING EQUIPMENT, NAMELY, NOISE GATES FOR ELECTRICAL SIGNALS; AUDIO GATES IN THE NATURE OF NOISE GATES; AUDIO SIGNAL PROCESSING EQUIPMENT, NAMELY, SOFTWARE-BASED DIGITAL PLUG-IN IMPLEMENTATIONS OF THE FOREGOING AUDIO SIGNAL PROCESSORS, NAMELY, COMPUTER SOFTWARE FOR PROCESSING DIGITAL MUSIC FILES AND COMPUTER SOFTWARE FOR MANIPULATING DIGITAL AUDIO INFORMATION FOR USE IN AUDIO MEDIA APPLICATIONS