I am now enjoying the Raysonic 128 too and have tried a number of tubes including Amperex and Mullard Holland made 6922s .
Nos Tesla worked well for me too but I am sticking with some German made Siemens PCC88s at the moment( Siemens E88CC are too expensive ). They sound the best to me ! My amp is a Unico SE hybrid and I find they work perfectly together. The tube rolling and listening over the last 3 or 4 months has been very enjoyable.
Keen to hear from others that have experimented.
Nos Tesla worked well for me too but I am sticking with some German made Siemens PCC88s at the moment( Siemens E88CC are too expensive ). They sound the best to me ! My amp is a Unico SE hybrid and I find they work perfectly together. The tube rolling and listening over the last 3 or 4 months has been very enjoyable.
Keen to hear from others that have experimented.