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A modular amplification system consisting of a plurality of pre-amplifying modules for allowing a user to select at will, a particular module as desired. The modular amplification system includes a chassis which houses a power supply for supplying low and high voltages to each of the pre-amplifying

A modular amplification system consisting of a plurality of pre-amplifying modules for allowing a user to select at will, a particular module as desired. The modular amplification system includes a chassis which houses a power supply for supplying low and high voltages to each of the pre-amplifying modules, support circuitry and interconnections for accessing the audio and control signals as required. Additionally, each of the pre-amplifying modules is designed, so that it contains the circuitry required for proper amplification of various musical instruments. The pre-amplifying module is selected from a vacuum tube amplifier, an analog and/or digital solid state amplifier, and analog or digital signal processing unit. The pre-amplifying module is then inserted into the chassis by an edge connector and suitable bolts which allows ease of installation and removal. Any combination of different pre-amplifying modules may be used which can then be selected by a user. The modular amplification system can be applied to a rack mounting unit, a self contained unit or a combo unit.

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1. A modular musical instrument amplification system comprising:a chassis that defines a plurality of modular slots and supports a plurality of first connectors each associated with one of said modular slots, each of said modular slot, having a first connector; a plurality of modular preamplifier un

1. A modular musical instrument amplification system comprising:a chassis that defines a plurality of modular slots and supports a plurality of first connectors each associated with one of said modular slots, each of said modular slot, having a first connector; a plurality of modular preamplifier units for amplifying a musical instrument input signal, at least one of said preamplifier units having amplification and sound coloration properties not shared by at least one other of said preamplifier units, each of said preamplifier units having a second connector for an engagement with one of said first connectors when said preamplifier unit is inserted into one of the modular slots; and a signal routing circuitry coupled to said plurality of first connectors for selecting an output from one of the preamplifier units in order to feed the output signal into a power amplifier.