I tried to buy the Decware 2a3PSE asking Mr. Deckert but he said “fat chance”, sorry that’s my interpretation of what he said. I do know a guy in NC that doesn’t seem adverse to the concept. Maybe I’ll try a 9-pin PSE of some sort. But on the 2a3 front, while waiting on a D. Kawalski Dark Gene green (ever heard of one of those?) I picked up 3 NOS 12au7 & a used RCA clear top. It uses one as the power tube for a big 1/2 watt. Well gotta plug them into something to make sure they work, I’ve had tubes that I had to return before, either dead or looking like a red plate situation. My little 3.5 watt amp uses 2 12ay7 tubes. So the au’s under drive the 2a3’s somewhat. At Decfest I mentioned that my DNA 2 speakers powered by 2a3 tubes had great bass until I started to “turn it up” so to speak. Headroom was the reason, give them more juice was the advice I was given, so 4 WE300B tubes was my solution. That did the trick. Forte IV speakers woke up the little green 2a3. But howdy do the au tubes underdriving the 2a3 tubes sure sound sweet. Headroom be damned. Just a quick observation. But what do I know. Rock on.