Chris Warner wrote:

True however, most companies are moving to Surface mount devices,
I hope that we see some more improvement. A secret is that many
of the basic designs for audio circuits haven't changed in over
100 years, most of the designs concieved for tubes are still in
use with transistors, perhaps modifing them to work wiht some
of the quarkiness of semiconductors.

No, they forget to modify them, for instance to use two electrolytics
back to back with the appropiate offset-voltage to the midpoint to
prevent them from distorting the sound, they still use them as if a
split-supply powered circuit itself provided an offset voltage that is
larger than the largest signal voltage. And it has been known since the
1930'ties that an electrolytic is unlinear if unbiased.

Chris


Kind regards

Peter Larsen
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