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RE: Initial A/B test between PP and SE 6bq5 amps

"Intellectually it has always bothered me that single ended amps are asymmetrical, that is they crop the negative half of the wave form, compress it relative to the positive half. "

Tubes want to turn on more than they like to turn off.

DHTs less so.

What you describe is the behavior of a tube with plate curves that have narrow spacing of the grid lines to the right and wide spacing of the grid lines to the left of the idle point.

Take a look at the plate curves of a 300b above (or 2a3 or 45 or 845 or 211). You don't see this un-even spacing between the grid lines.

The plate curves in the post below are that of a triode wired KT88 where you will get the affect you describe.

Tre'


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