Hi, my name is Miguel and I have been lurking in this forum for a while. Finally joined a couple of weeks ago and this is my first post.
I am not knowledgeable in electronics and I would appreciate your help since I would like to use the JJ ECC99 tube in a Singlepower MPX3 as an output tube. Yes I know, Mikhail has made some horrible amps and has stolen a lot of money from many. However I already own the amp (bought it from Tyrion) and w/ Dr. Gilmore's help I replaced the diodes, verified the transformer is acceptable, and installed a couple of resistors to bleed the large power caps.
I first came across the JJ ECC99 tube in a headphone amp by Dr. Lloyd of Mapletreee Audio. Recently I read the JJ ECC99 could be used in place of the 5687 provided a base is made to properly account for the difference in pin location. I would appreciate it if someone could help me by first verifying the JJ ECC99 can indeed be used in place of the 5687. Then I would like to know if could find an interested builder so I could commission two bases to adapt the JJ ECC99 to the 6SN7 bases in the Singlepower MPX3.
Thanks.