I have a PL Dialogue integrated. Hands down the KT150 is my favorite and my change of pace the 7581A. I am a Streamer using the Roon interface. I like Ultralinear for Radio and Triode for everything else. I have heard others mention they prefer the EL34-7581A tubes with the PL HP power tube array. It’s hard for me to imagine going to any other power tubes since I seem to have found exactly the sound I’m looking for
Pentode Power Tubes - Ultralinear vs Triode
While I’ve seen a bunch of posts on power tube rolling, I haven’t seen much mention of how preferences correlate to what mode you run if your amp has that option. I have a Primaluna DPHP that has the Ultralinear/Triode mode remote and can run a bunch of EL34 variants up to KT150.
So far I’ve only tried the stock EL34 and Tung-Sol 7581A and seem to prefer Triode mode with both. Before coughing up for another set of 8 to try I’m doing more research. I think based on my preferences so far that the bigger, punchier tubes may not be the way for me to go. I could be destined to find my way into SET amps eventually.
So which tubes do you prefer in what mode of operation?
So far I’ve only tried the stock EL34 and Tung-Sol 7581A and seem to prefer Triode mode with both. Before coughing up for another set of 8 to try I’m doing more research. I think based on my preferences so far that the bigger, punchier tubes may not be the way for me to go. I could be destined to find my way into SET amps eventually.
So which tubes do you prefer in what mode of operation?