TheGimp Member Joined 2009 2019-12-11 2:30 am #21 2019-12-11 2:30 am #21 I generally am more concerned at looking at the distribution of harmonics on an FFT than I am with overall THD. As a rule, proper biasing of a tube minimizes THD but with 2nd dominating, higher harmonics may be masked unless you look at the FFT.
I generally am more concerned at looking at the distribution of harmonics on an FFT than I am with overall THD. As a rule, proper biasing of a tube minimizes THD but with 2nd dominating, higher harmonics may be masked unless you look at the FFT.