Just wanted to do small update,
as far as my tubes goes, I guess I won't even try anything else.
Yesterday I rolled in NOS E188CC CV5354 7308 Siemens Halske 1960´s gold pins , let them in "burning" for about 2 hours. I know I'am supposed to wait for 20 - 100h before doing "critical" listening, but I did it right away :D (So maybe it will get even better in future)
I just laid down on bed, turned lights off and listened for about 5-6 hours with small breaks. I...