I've just came into this very nice board. Seems to be a place with lots of knowledge to learn and share. I've been a veteran from Head-fi since 2007 but haven't posted much, just fooling around in the dark. My biggest hobby is building amps. During the last few years, I've got some amps built and as at this very first post, I'd like to share my most favorite amp so far. It's a DHT SET amp for electrostatic headphones, well, you can say it's just for Stax. I opted for the almighty 845 tubes, DC coupled by a D3a. The amp is transformers coupled using Hitachi amorphous AMCC cores. Power and output transformers were winded by myself. It has been quite an adventure to build this monster. Probably I'm the second person on Earth who built a 845 amp for Stax. Frank Cooter was the first and I was deeply impacted by his designs. The amp has been powering my 007MKI for a while and I was satisfied with the sound. I have some Kevin Gilmore amps (Megatron, Carbon and T2) that were set aside after this was finished. At first I experimented with B+ 1100v but decided to settle on just 800v. The input is also coupled by permalloy core transformers. After this amp, I've so many design ideas for Stax using these big boys transmitting tubes. Next one probably is a Sakuma-inspired amp, 211 driving 845 with separate power supply. That's it for now, I hope to enjoy the time being here.