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Old 23rd July 2013, 03:41 PM   #11
Raj1 is offline Raj1  United Kingdom
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Join Date: Jan 2003
Location: UK
I use D3A triode wired with battery grid bias (silver oxide 1.5V coin cell) with 170~180v on the plate - sounds very nice.
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Old 28th July 2013, 10:49 AM   #12
regal is offline regal  United States
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Join Date: Jan 2004
Location: MD
Originally Posted by tomchr View Post
d3A in triode is nice as well.

The problem with D3A is it runs out of cathode bias, it has a lot of gain but since the distortion rises as the grid reaches zero adding a preamp won't help a D3a-300B amp scale. The 6e5p may be better for of the triode wired pentodes.

If you want to stay away from pentodes, I am liking the JCC99, 6N6P, 12BH7A, and ECC88 types. I still think there is something to be said for a good triode vs a pentode wired as triode. One that is hard to find of this same series is the E182CC (a good one has a gain of 24.) All of these have a healthy g-k bias and can benefit from a peamp or source with a high output.
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