That's exciting! Looking forward to your impressions of the amp in your system. 150 should give a nice start for the Torii and its tubes revealing their sound.

I ordered a matched quad to try as my current Winged C quartet is just past half its life cycle. Should be good by these reports!

Mine moved around a fair bit for a long time. Seems like power tubes usually sound OK right at first, then move through mostly less-than-stellar stages to get to their sound...after about 80 hours, mine started more seriously revealing the detail again, and within the darker matrix finally began to result in what I think of as "warmth." A slightly rich, textural tonal signature that is not transparent but feels that way...colored a little toward the dark in the mid to low mids but also having a lot of pleasing detail, macro and micro, bringing out textures, sparkle and air. And the JJs did give a nice tight bass thing, with big body and good ambient information. But I only got part way through burn in before one started to fail! I hate that.

Thanks Gopher and please keep us informed as they sort out.

How much time do you have on them?

Sounds interesting and fun. I suspect that they will need at least twice that with the Isotec CD. My wild guess was that they would need 150 hours or more of normal music to really come out in a big way, but this is totally a guess.