What does CJ say?
4 responses Add your response
It should not be a problem just make sure it isn't biased to hot. The 6550 and KT-88 are almost interchangeable the sonic are quite different.
I personally found glory in the reissue Gold Lion KT-88s. Use a good dealer like Jim McShane a sponsor on AA tubes forum, he is careful about matching and screening the tubes for losers. They cost a pretty penny for a non NOS tube, don't be shocked, but they spank everything else in the amp I am using. (Jadis DA-60 )
Below is text I got from CJ's FAQ page.
Questions about Conrad-Johnson Vacuum-Tube Components:
Q. Can I replace a tube with a different tube type?
A. No. You should only use the tube type that is specified by conrad-johnson or an exact substitute. Using a different tube type can be expected to degrade performance and may damage the product.
I would call or email them anyway. I have VTL 300 Deluxe and changed out the 6550's with KT-88's recently. The reissue Gold Lions KT-88's are as good as everyone is writing.
Not sure what has changed, but this is from a previous post of yours and members gave their thoughts/opinions :
have conrad johnson premiere 140 , can i remove the stock 6550,s and replace with my quad match set of genalex gold lion kt88
Pavpet (Threads | Answers)
You shouldn't have any problem. They're interchangeable.
Mingles (Threads | Answers)
Giddy up! Replace those fuses (Isoclean or HiFi Tuning) while your changing to the Genalex Gold Lions.
Spin the Yellowjackets.
Lapierre (System | Answers)
Check with CJ tomorrow to make sure. They seem married to
Fjn04 (Threads | Answers)
When I checked with CJ regarding my CJ power amp, I was told that if I used KT88's instead of the 6550's, biasing the amp would be a problem.
Cyclonicman (Threads | Answers)