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How about UTC LS-55?

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.

Edits: 03/13/17

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  • How about UTC LS-55? - sser2 00:21:59 03/13/17 (1)


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