"Nick Gorham" wrote in message

**Well, not quite. Modern BJTs do, indeed, approach Triodes in their
distortion levels but Triodes employ a large amount of NFB to
achieve such low levels of THD. Adding a similar level of NFB around
a transistor will allow the device to deliver comparable or lower
levels of distortion.


On that subject, can anyone suggest a equivilant to a 2SK170 ? or a UK
supplier ?


http://www.mushroom.co.uk/stock_w.htm

UK-friendly:

http://www.donberg.ie/descript/2/2sk170.htm