Charles1dad,
I honestly have been so taken with the Takatsuki/Frank pairing that I have not yet followed through on the Vac 30/30 pairing as of yet. The second set of Black Treasure tubes I purchased here on audiogon, purportedly from Grant Fidelity, are shorter and don't have the box markings that the ones I purchased with the Franks have so I'm a little afraid to pop them in without testing first. Unfortunately my tester doesn't do 300B's. I will find an avenue to get them tested before I try them out.
I'm currently breaking in the ASI livelines between amps and pre and the sound is just now starting to come around a little at 70 hours. Wasn't really impressed right out of the box but have the feeling they will be stellar after a few more hours
I'll keep you guys posted on the VAC/Black treasure pairing.
Markus