I couldn't find the BEST300B that wanted, and the Baltics are so high used that you may as well buy new, so I bought a DAC 3. The seller used it for headphones, has the Horizon I believe in his main system. Said it used it in his main system and was surprised how close they were in sound. I know how to wire a 6X5 socket to take a 6BY5, which doubles the current and really makes 6SN7s sing. I don't know if the current transformer can handle this load, so I'll likely replace it in the circuit, but it's likely just a tap off of a larger transformer, so I won't be able to physically replace it! Anyway, the price was right, and while it still renders my 300B tubes useless, it is what it is. I just wish I had been able to either be more patient, or able to find another brand of comparable DAC. My old ways still haunt me. We had a saying in the service; "Do something, do the right thing, do the wrong thing, but do something." Different situation, but it seems imbedded into my psyche now. The idea though is simple, if you don't act, the enemy will, he who responds dances to the oppositions dance. Playing defense is losing. It permeated everything though, not so sure that had survived all of the politics though. In war gaming, even though we should win, the flag officers are like McClellan was in the Civil War, too timid and too unwilling to take the requisite losses it takes to win in war gaming a war with China... Anyway, that's the how and why of it for the most part.