Butler:
Yes I would like to make that comparison in person and take my amps. with my tubes to check on both the new and old amp. I am not as particular to the sound of the KT150 on the new amp. as I am relative to some lesser powerful tubes but more pristine sound. I have a
had great luck with the Winged C NOS 6L6GC and the new Psvanne WE Replica EL34's using Telefunken NOS as drivers. My speakers for driving are Living Voice 94DB OBX-RW's and therefore the KT150 is not necessary but it would be fun to hear what it does on that amp. compared to mine with less powerful tubes. I will let you know what I find out as this is the only way to really know.
gwalt