Textbook in PDF format This extensively revised second edition provides ten additional new chapters on the noise-relevant handling of input bias-current-compensated operational amplifiers. Vinyl is back, tubes/valves are back, at the high end SMD-free analog amplification is beating digitalised chains, top microphone, and analog synthesizer manufacturers are still relying on good old operational amplifiers or fully discrete BJT, FET and/or tube-driven amplifiers. There is only one problem that has not been satisfactorily solved by the manufacturers: It is the noise produced by the active components and the useful reflection in simulation tools, in tables or graphs of datasheets / data books