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.
KT-88 vs. EL34
Hi. I have a modified Jolida 502 amp (not my main amp) currently using KT-88s and formerly the similar 6550s. Some have suggested that this unit will sound even better, power hit aside, modifying to accept EL-34s. The mod is easy. Anyone find this to be true or is it just another myth? Thanks in advance, Andy8400.