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.
hugo1

Showing 1 response by kijanki

Atmasphere, there might be some issue since triodes have lower internal anode resistance leading to higher damping factor and perhaps perception of less bass.

Pentodes are less sensitive to supply voltage variations meaning that large change in supply voltage cause very small change in plate current. Triodes require better power supplies. I also read somewhere that pentodes are noisier.