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PP2012 - KT88 Hi-End Push Pull Amplifier
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Pin de Alexey Burnin em tube ampl | Esquemas eletrônicos, Amplificador
PP2012 - KT88 Hi-End Push Pull Amplifier
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DIY KT88 + 6SN7 push-pull Amp / Part 1 | Jkx@home
EL34 double PP