re-tubing CJ LP70s

Change all the 6922 tubes out for a nice set of amperex or mullard 6DJ8 and it will help. You can try to install KT88 in it also but I have never tried that and don't know if that will improve on the SED 6550.

Not sure why people are mentioning 12ax7 tubes. The LP70 uses 6922. I believe the 5751 are a lower gain so be careful.

I was thinking the Mds school of rolling the Calypso tubes first and didn't state that, sorry!!!

Any of the Amperex 6922's/7308's would be great in the C/J driver sockets.

Jtimothya,

In my post above I mentioned my preference for SED Winged C 6550 tubes in my CJ Premier 8A's. However FYI I had already scheduled to have my PR 8's converted to the XS triode version utilizing EL 34's tubes, for the reasons you mentioned in your post. I have 4 quads of original NOS TESLA EL 34s on hand which I aquired for the conversion. I am very anxious to hear the change. I am also having Teflon V-Caps installed while I am getting the XS conversion done.