Triode mode vs pento mode

I'm new to tube amps/preamps and have a very basic question. What's the difference between triode and pentomodes? Thanks.

hugo102-21-2013 1:33am

dover Details Discussions Posts This discussion Message User 2,247 posts 03-14-2013 at 01:03am Copy Comment URL Report Comment Edit Delete Atmasphere - Thank you for the response on ultralinear vs triode. That confirms my thoughts. Fwiw I got the Dyna's in triode mode and converted them back to ultrulinear. It was so much better I never went back. Later on I converted them back from 6550's to EL34's which I preferred on vintage Tannoys. I dont use them but they are nice to keep around.
bryoncunningham Details Discussions Posts This discussion Message User 890 posts 03-14-2013 at 09:50pm Copy Comment URL Report Comment Edit Delete I am new to tubes, but my experience so far with my Prima Luna amps (a Dialogue 4 and a Dialogue 7) is similar to Dover's. In triode, in my system, the PL's seem to lose resolution and dynamics. And the bass becomes less defined, even with my speakers crossed over at 80Hz into a sub. It must be system dependent, because I've heard the PL's several times at shows, and I always preferred triode. But here at home, ultralinear is the clear winner. Bryon
johnsonwu Details Discussions Posts This discussion Message User 469 posts 03-16-2013 at 06:09am Copy Comment URL Report Comment Edit Delete Thanks a lot Atmasphere for sharing the knowledge. Now I am so curious I want to get a Dyna myself to try out :)