Vogel, Burkhard. How to Gain Gain A Reference Book on Triodes in Audio Pre-Amps / [electronic resource] : by Burkhard Vogel. - 1a ed. - Berlin, Heidelberg : Springer-Verlag Berlin Heidelberg, 2008. - v.: digital ISBN: 9783540695059 Subjects--Topical Terms: Amplificadores de audioTriodos LC Class. No.: TK7871.58.A9 / V64 2008