Pré-Amplificador Fonográfico com Válvulas Octais - Manutenção e Melhorias
Video about a phono preamplifier built a few years ago, with a circuit using octal tubes. Details of the circuit and construction are shown. Maintenance and replacement of some components aiming at performance improvements. Schematic with the device's circuit: http://www.hagtech.com/pdf/cornetocta... Keywords: tube, valve, preamplifier, sound, octal, performance, audio
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