NOS KT 88s or GE 6550s

Zd542
Many thanks for your response. The CJ came 6 years ago with the stock Winged C 6550s. These were replaced with the KT88s based on advice from fellow Agoners and others. I have am happy with the sonics but have always been curious about the improvement that NOS tubes can provide vis a vis current production tubes. You are right that this is highly subjective and any opinion is valid only in the context of a system/room/musical preferences and priorities.
Would still love to share the experience of Agoners who have switched to NOS for their CJ or ARC power amps.
Pradeep

Hifigeek1
I did send a mail to CJ in early July regd the KT-120s. No response. I should have followed up. In any case I got a quad of GL KT 88s as a replacement for the Winged C 6550s.
Daveyf
I think you just convinced me! I am trying to work out some sort of refund deal with the Singapore dealer for the NOS GE 6550s, in case things dont work out.Are there major differences between the GE and Jan 6550A , both NOS ?
Many thanks
Pradeep

Daveyf
The Singapore dealer (Well Audio Lab) tells me there is no difference between the GE and Jan 6550s.
Njoy
Pradeep