current 814 amp

here is the schematic of the tube amp I am currently listening to. some notes, back to front:

• the output iron is tango xe-60-5 snf; the b+ is hooked up to the screen grid tap, so instead of 5k on the primary, we get about 1k9; in return for that, I can use a lot more dc current than the standard 80ma, I think (has been a while) I biased the 814s to 130ma;
• yes, that is +0,9V on the grid of the 814; this amp should be good for 15 watts;
• the 6L6 kathode follower is biased to 25ma with batteries: add one, delete one to get the current right; plenty of current and the kathode impedance should be something like 190 ohm;
• even more happy I am with the low dcr of the choke under the 6L6, the 36 ohms offloads the 6L6 for the dc component of the grid current; this is a lundahl ll1638; I was inspired by per lundahl’s comment that these power supply chokes have the same hi‑fi qualities as their plate chokes;
• note that this amp is not used for bass, the inductance on the kathode choke is not sufficient for that; from the experiences of friends on the joelist I have distilled the rule that the number of henries of a kathode choke should be the same as if you would use it on the plate of that tube; so for this tube full‐range I would use 54henry;
• interstage is tango nc‑14, 1:2, single primary, secondaries in series; again not for full‐range, 12,5H primary inductance is not enough for that;
• the 10 is biased to 15ma;
• the input transformer is this german broadcast fader (shown in the pic in the previous post), combining the stellar sonics of a volume transformer with the smooth convenience of a fader, hooked up 1:2.