Changing tubes to convergent Ultimate MK1


New member
Username: Krellyourworld

Post Number: 1
Registered: Mar-06
Hello all,

i would like to change the original tubes on my CAT Ultimate with other tubes, for example the E88CC SQ by Philips to replace the 6922.

CAT discourages this practice. I would like to know if somebody successfully did this tweaking and which tubes he/she used?



Gold Member
Username: Jan_b_vigne

Dallas, TX

Post Number: 7954
Registered: May-04

Do you know the reason for the discouragement?

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