[Amps] solid-state amp filter specs

[Scott Townley]

I don't know if this is a valid generic question, but here goes...
With your "standard" solid-state amplifier, with multiple pairs of transistors in push-pull combined...
What would be an acceptable 2nd harmonic filter stopband rejection value?  This would be at the 500W level, so I guess it's equivalent to asking what a typical 2nd harmonic value from combined pairs of push-pulls.

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Scott Townley NX7U
Gilbert, AZ  DM43di