S stitch89 New member Jan 14, 2009 #1 I just added 4 new kt88 groove tubes two SV, two C2 and two of the el34s. The el34s and kt88sv bias no problem but the kt88c2 are a lot harder they jump from around 40 to 100 or more is there something possible wrong with the amp or the tubes.
I just added 4 new kt88 groove tubes two SV, two C2 and two of the el34s. The el34s and kt88sv bias no problem but the kt88c2 are a lot harder they jump from around 40 to 100 or more is there something possible wrong with the amp or the tubes.
