"Fleetie" wrote in message
...
"Arny Krueger" wrote
"The biggest problem with the amps is poor current haring between the
output triodes. All 4 need to be matched closely to prevent failures.
Initial matching on the bench ensures initial reliability."

A hearty DOOOH! to that!

**** me. It must be a **** design then.

Do you design a transistor circuit making assuptions about h_FE?

**Some do. Fortunately, BJTs offer very long term hFE stability, once
chosen. Valves, OTOH, vary all over the place, with time.


--
Trevor Wilson
www.rageaudio.com.au