Ordered beefy power transformer and a choke: Hammond 370FX and Hammond 156R. (Freight on Edcor was just too much and over a certain amount another well known firm will sent me without charging freight so the Hammonds work out just as expensive as the Edcors). Will need some resistors to drop the B+, was not much difference in price between the 370FX and the 370EX. Now if I want I have the opportunity to change the circuit. OPT are 10 Watt rated so I could conceivably go with the 7027A (touted as the "HiFi" version of the 6L6-GC).
On the subject of the 7027A: if you are prepared to use a top cap then use the 6BG6, needs some rewiring but the NOS are still very cheap and they are a quality tube.
http://www.vacuumtubes.com/6BG6.html5 January - ordered the bulk of the parts to populate the PCB with Mouser. Am shipping through a freight forwarder, direct shipping from Mouser is ridiculously priced. A couple of capacitors were not available but I'm sure that I have those values somewhere in the junk box.
6 January - mailman delivered the PCB, yeah. Decent quality PCB, nice silk screen. Waiting to get confirmation on choke and power transformer shipping. Ordered a 300 Ohm 30 W adjustable resistor from ePray to adjust the B+ (not many decent ones around any longer) some years ago I got some nice lockable Ohmite for the 6L6-GC amp as cathode resistor - wanted those so I could do tube rolling). Mouser no longer has the Alps pots - obsolete. Managed to find one on ePray. Transcendars have been shipped. Time to start giving some thought towards layout, likely to use some 1/8" aluminium.
7 January - Transcendars are in the country, expecting delivery tomorrow. That's fast from the US, suspect it has to do with the high shipping costs being some urgent delivery. Have heard that if it is valuable stuff it is best to ship that way otherwise you run a chance that it falls off the back of a truck along the way.
7 January - did not have to wait - the transformers arrived, yippee! Weighing at 1870 grams each, still on the small side but OK for me, don't know how these are rated at 10 watts, they are a different shape but about the same size as the ones I bought as youngster for 4 ~ 5 Watt (specified for EL84). My rule of thumb calculations give -2dB at 25 Hz for these which is sort of OK for not too much phase shift at 40 Hz. Anyway good value for the money, I am going by the notion that it is always the cheapest buying the best straight away. (otherwise you'll buy twice - first the junk and then the good stuff)
8 January - have last few days been searching the web for the ultimate answer on to use screen resistors or not and if so what values. Finally found the definitive answer in a publication from Langford -Smith (1955 Radiotron) that recommends 47-220 Ohm and a cap of 1 or 2 N between screen and plate while g1 should have 10K and 470K to earth. Even the plate can benefit from a 100 Ohm resistor (often seen in transmitter outputs) but I am skipping that one. Saw a Tango U-789 advertised on oBoy but closer examination showed it was 3.5K and had only 15H inductance. Thanks but no thanks, someone else may have those. Originally I had selected a more expensive Hammond that would have given me 250V-0-250V instead (same current, apparently a more popular model) than the one that I have on order. Would have been slightly easier to implement but less flexibility down the line. Removed the cloth tape around the Transcendars, the adhesive was already sticky and it will collect dirt in a hurry. Have written to Gery asking what varnish he used so I can give the core an extra coat. If oil based I may even put on a semi-gloss black.