BA-1A Two Stage Preamp Schematic

BA-3C Program Amp Schematic

BA-4C Monitor and Recording Amp Schematic

BA-6A Limiting Amp Simplified Schematic

BA-21A Preamp Schematic

BA-23A Program Amp Schematic

BA-24A Monitor Amp Schematic

BA-25A AGC Program Amp Block Schematic

BA-31A Preamp Schematic

OP-6 Portable Remote Amp Schematic

OP-7 Portable Mixer Preamp Schematic

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