You might want to consider the Cardas Golden Reference ICs. A tad pricey but can be had easily on AGON used. I've tried AUdience AU, TG audio, and Luminous Ref, and still return to the Cardas with my Joule/Berning tube setup.
Warm sounding cables - non fatiguing
Any suggestions on reasonably priced cables which are non - fatiguing (not bright or overly detailed particularly in the upper frequency regions). Currently using tubes with Millersound cables but sound is a tad bright -- anyone else had this experience with Millersound (similar to JPS).