First, it would be helpful to know what amplifier you are using now and where you are hoping the Kora Cosmos will take the system? Even with the Jags crossing to the Titan to alleviate the load, this is unlikely to be a happy pairing. The Jags need an amplifier with finesse, and control. The 6AS7G used by the Cosmos is far from an ideal audio tube. As a twin triode, it lacks the magic of a true triode such as an 2A3 or a 300B. If you want to go with tubes, try something like a Music Reference RM-200 (or a used RM-9 MKI or MKII, no matter). Try and be certain to take a step forward and not a step sideways or backwards...good luck.