Now that I finally have a TU-70, I'm hoping to get my AU-70 into restoration sometime in the next few months, and was wondering what those here who have done one recently are using for output tubes. I'm talking current production, not NOS from 1965 that cost obscene money. Preferably something that can be readily procured as a matched quad. I've read mixed bag on the Russian tubes that are supposed to stand up to the high plate voltage on this amp, so would appreciate any first hand experience being related here on both sound quality and reliability/life span under the operating parameters of the AU-70. For that matter, if anyone has specific suggestions for the other tubes utilized, that would be appreciated. I went through some trial and error finding the "right stuff" with my AU-111 a while back, and hoping to avoid that this time to keep the cost from getting out of control. One final question, for replacing the multi-sectional cans, is there a consensus on getting repro's of these, or better to get high quality individual caps and mount them under the chassis? While I'm not that concerned about original appearance, I can leave the existing cap mounted (but gutted) to keep the stock look if the repro multi-sectionals are deemed inferior quality.