I bought a Dennis Had Fire Bottle 45 Amp and LP3.1 Preamp about 3 months ago that were built by Dennis in 2019 (he signs and dates the bottom of each piece). I replaced the 45 tubes with a matched pair of Emission Labs 45 tubes and oh my gosh....the amp and preamp blew my mind. Amazing pieces of gear.
I've heard one of his 300B, and it will be most people's "final amp". I live just over an hour from Mr. Had and Cary, so many of his builds are around this area. I spoke with him last month, and he is building a Phono Pre that I have an option to buy. I'm anxious to see and hear it.