Tube tester recommendations

I would like to amend my statement ( "I got a taste of what can happen when I connected the 168( Amperex US White Label PQ) to the V-4 's(KT-88) I had to put the EH 6922's back in because the sound had become too mushy".) The cause turned out to be the power cord to the Calypso plugged into a power conditioner!!

If the Calypso's sound was mushy because it was plugged into a power conditioner (PLC), it is time to 86 that PLC. I have a friend that has several years experience with the Calypso, various tube-rolling efforts and power cords and power conditioners. He used the original Hydra PLC. When it was removed from the system, the clarity and dimensionality took a major nose dive. He has since moved onto the Running Springs Haley PLC which takes the system to a new level of dynamic contrasts. So your observation has nothing to do with the Calypso but rather the PLC you used.

As for tube rolling, it takes many years of trial and error with many tube types, brands, etc., in lots of various components, to get a feel for the contributions made by one tube or another. To simply swap out the stock tubes with a random set and think that is it ..... well, you've only just begun.

As for having to put back the EH 6922, if this is required, something is seriously wrong with your system. This tube has so many problems, I don't even know where to start!

Jafox I made a poor diagnosis of a problem thinking it was tubes and not the combination of power cord and PLC.I never thought or stated that it was the Calypso.I feel the Calypso is the the centerpiece that I am building my system around. The tubes I switched were in the Raysonic 168 which is the weakest (?) piece in this system,I meant to imply that the interaction of multiple tubes in multiple pieces of equipment presents a Pandora's House of posable combinations. I don"t consider this a random choice "Amperex 6922, PQ, white label, US (shield, gold pins) Another very good Amperex tube. Warm yet lively, focused, grainless and transparent. A winner one of the best. Dynamic with punchy bass to boot...." I consider it a good first pick.

Rodman99999 thanks for the imput

Samhar- The Amperex tubes(whatever family) are always a reliable choice. If you enjoy focus, dynamics, ambience retrieval, grainless highs, transparency and extension in both directions w/o bloat or sibilance: try the upper-crust of the Siemens 6922 family(7308/E188CC or CCa's). If the recorded material is warm, they will let it through, but will not add anything of their own. It's hard to exceed their performance(I've tried). They're pricey, but worth every penny if you really love your music. Happy listening!!