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Original Message
How about UTC LS-55?
Posted by sser2 on March 13, 2017 at 00:21:59:
Power rating of 20 W is very conservative. 3K and 5K primary. Has a variety of secondaries, which is good for tweaking NFB. May seem pricey, but it sold for ~200 in today's dollars back then. It is highly interleaved, highly symmetrical, and has exceptional bandwidth. Cheap OPT may cause stability problems when inside NFB loop.
BTW, I am hunting down 46s for use as drivers for 1624 triode-connected.