I have been getting back at this..working up to a limited run of these as the STAX SR-X9000 and Audeze CRBN have made that need to happen. But the chassis is extraordinarily expensive and difficult to produce, so I am working at ways to fix that. Also need to put it on the scale, thought it was 45lb but feels more like 60lb haha. It's really not that big of a footprint (13.5x18), but it makes the BHSE look like a toy.
Power consumption is 190-200W depending on tubes, with 90-100W of that being heaters. The bottom of the amp is ice cold and the top is pleasantly toasty. The first 3 stages have recessed slide switches on top to switch 6.3 to 12.6v heaters, so common tube types are:
1st: 6SN7/12SN7, 12AU7 and many others w/ 8 to 9 pin adapter
2nd: 6SL7/12SL7, 12AX7 and many others w/ 8 to 9 pin adapter
3rd: 6N6P, ECC99, 12BH7A, possibly others such as 5687 w/ pin-out adapter
4th: Emission Labs 20B-V4