I update my version of LTspice every so often and I found that the FFT plots from the latest version are infested with harmonics. This wasn't true before, when the usual 3rd, 5th, 7th harmonics were present in diminishing quantities. Now there are literally dozens of the things and they don't decrease so much with increasing harmonic number. (This is for a simulation of a triode-strapped EL34 PP amp). Has anyone else noticed this?
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