So going off my original amp build poll, i ended up with a Torp3 happily for HD800...no regrets at all there http://www.superbestaudiofriends.org/index.php?threads/next-build-some-diy-tube-amp.2215/ For 2017 i have a reason to build a speaker amp taking some suggestions. I was going to try the elekit stuff, but i really liked the modular nature of this and flexibility to adapt the driver board for 300b, 45, or 2a3 tubes by just changing a few resistors and diodes. If i want to upgrade the DC filament heaters later, then i could find a AC filament boards for the driver tubes. The documentation and support for this kit is great. Transducer: Fostex 208EZ sigma series full range 8". Due to space constraint's i cant go full blown horns, they just take up too much space so im going to have to settle for Japan compressed style. I understand the extension constraints and i might have to add super tweet and sub when/if i can afford way down the road. At ~96w/dB i should have enough power to get to real life SPL since this amp makes about 8w. I intend to put these in the corner of the room or against the wall, so back loaded or some sort of horn enclosure might make sense. Cabinets might be BK20, Hasehiro MM191T, or D58 if i can find the plans and get help chopping wood Here are the things decided so far: Input Transformers - Jensen Line Input (not capacitor coupled). Will be XLR balanced input only. Output Transformers - going to start with copper Electraprints 8ohm Z (single secondary) to match the fostex 208EZ drivers. Speaker only taps. Driver Tubes - EC88 family for now (default) as they seem to be plentiful and not too $. Output Tubes - 300b for now (default). I havent decided whether i should go EH Platinums, JJ, golden lions, or EML's. I just haven't heard them or NOS honestly and its $ that i could spend on super tweeters. Still waiting for the Electraprint OPTs... Unregulated PSU section completed w/o heat sink mounted device and bridge rectifiers HV regulator 400v w/o heat sink mounted device DC filament regulators for output tubes and driver tubes Driver board in progress Enclosure will probably be to reuse this old hifigalaxy pesante box that i have had laying around for years. Hopefully it's tall enough to fit everything. I think i want to put the transformers underneath the top plate if possible...i might not be able to fit the PT under. Envisioning to FPD a 6-10mm top plate to accommodate everything IEC, XLR inputs, and speaker taps to minimize CNC costs.