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RE: Are tubes better at voltage gain or as amplifiers

As Tre' indicated, tubes are voltage controlled and BJTs are current controlled. Like tubes, FETs are voltage controlled, which makes them fairly easy to combine with tubes.

In hybrid circuitry, tubes for voltage amplification and FETs for current amplification is a reasonable "mantra". Dig into the archives for the tweaked RCA phono preamp, for an example.

Eli D.


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  • RE: Are tubes better at voltage gain or as amplifiers - Eli Duttman 08:08:12 05/04/17 (0)

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