Cecil, W5DXP wrote:
"Richard may be referring to Class AB push-pull where the source is more
than one device,"

Push-pull works to eliminate harmonics without filters. In my Kenwood
TS-130S, the push-pull devices are 2SC2290*J`s, if my squint is right.
Pc=175 (W), VCBo=45 (V), IC=20 (A), etc.

Best regards, Richard Harrison, KB5WZI