So I dropped the idea and while preparing for a DIY meeting, collecting stuff to sell and stuff to give away and stuff to keep I found I had at least three quartets of ... no, four quartets of 6L6 or similar. One set of Chinese, one set of Russian another 6P3S-E and a batch of CV1075.
When (or IF

) I finish the Aussie amp described in Silicon Chip a few years ago and another one with the input/phase splitter/driver cascode done to the SEPP recipe, I still have to batches left and one could be used to solve the issues that made me start this thread, make use of the heavy transformers in my old Soviet Priboi amp.
Well, I have come a few miles by ordering a PCB for a stereo EL34PP. It's a very simple amp - ECC83/12AX7 as input tube, a ECC82/12AU7 as phase splitter and driver. Fixed bias, but ....
The board looks like this:
Ebay.
.... as often you lack a some info. Some figures on the enclosed schematic don't match with what's printed on the board and hey - what's the funny markings on the board - some extra components or functions not on the drawing. There are space (and holes) for two relays and after a lot of thinking I think the board is constructed to care for fixed as well as floating bias. The figures A and F indicates that.
So ordering the components I think I needed, I have managed to get this far:
Attachment:
IMG_7056.JPG
Missing the 0.1uF caps that actually are supposed to be 0.47uF and the 22K trimmers. Some electrolytics should be in my storages.
Next, I missed four octal PCB mounted sockets, got only three ... but had the novals

.
Being unwilling to pay $10 get the last $1.20 socket from Germany or Finland I cheated. I simply bent the solder tags flat and soldered them to the board using substantial amount of heat and solder.
Not seen on this photo:
Attachment:
IMG_7057.JPG
In due time I will modify the chassis, move some transformers around in order to squeeze the board in place. Hopefully I will then be able to use some of the power from this heavy piece.
Have to move the mains transformer to make way for the board.
Attachment:
Priboi-28.jpg