KT-88 vs. EL34

1graber2,

I too have a PLD HP. I have read many posting and Kevin Deal also speaks very positively about using KT150s

That's the tube I am rolling next. 

psickerson what exactly are you looking to gain and are you using the stock EL34?? I have the non HP and rolled in some KT150's.  They are a nice tube and much better than the KT120 but weren't giving me what I wanted or expected.  The Gold Lion KT88 so far is working better and to be honest I think the bass has improved. Your mileage may vary but so far I've been impressed with the GL KT88.

Hi. A final word from the OP... I did end up modifying the bias circuits of the Jolida 502 to replace KT88s with EL34s (essentially making it a 302).

I LOVE the difference in sound, especially for classical music (what I listen to most) particularly how the tube amp handles complex harmonics (think of 30 violins, etc.). The only bad news is that it puts my poor B&K into question. I had assumed any subtle harshness was from my MM cartridge which has replaced my MCs (a topic for another time) but the edginess during difficult passages was significantly reduced so I'm keeping my MM cartridge but switching to the EL34 amp.

For smaller ensembles such as jazz, folk and even rock, the differences between the amps are virtually indiscernible (I installed a switch box and listened to instant, direct comparisons). Bottom line: The EL34 is a terrific tube. Worth the trouble. Thanks for everyone's input above. Andy8400

Good to hear. Now try black plate 6L6!