Thanks for the offer LK but I need octets. The VAC PA-160 requires four output tubes per monoblock. I Googled Richardson tubes and got the Richardson Electronics, Ltd. website but found no KT 88 nor any standard audio tubes, just a lot of transmitting and receiving tubes. Is there a vendor for them?
I have to say the Penta Labs are very nice and I think maybe shed a hint of what could be the SQ of the Black Treasures. Keepin' my fingers crossed that Grant/Rachel/Shuguang put's em on sale again.
Have fun,
JakeJ