Quote Originally Posted by TS808
Can someone explain to me the difference between pentode vs. triode, as in the Blackheart amps? Of course, one wattage level is in pentode mode and another is in triode. I don't have a clue what these terms mean?

Thanks in advance.
The EL84 is normally a pentode, which means it has 5 elements inside the tube: anode, cathode, and three grids in between. Grid 2 normally has its own node on the power supply, but in triode mode, it is connected to the anode. This cuts the power, and makes the amp darker.

I hardly ever use the triode mode on my LG head, I just prefer the pentode tone.

tung