[Phil Allison]

"Vladimir Vassilevsky"


However there are few special cases when a FET output stage has an
advantage:

1) With FETs, it is simpler to control bias current, because of the
negative dependency from the temperature.


** Completely wrong.

The tempco of typical (ie switching) fets is strongly positive - the gate
threshold voltage drops by about 6mV per degree C.

Bias compensation is non trivial and crucial to get right or thermal runaway
is likely.



...... Phil