What can I do with these pentodes?

[trad3mark]

Hello all!

I recently found a collection of old russian 1J37B mixing pentodes which I forgot I had. Some clever chappy over at MIT translated the datasheet of them:
http://www.radiomuseum.org/forumdata/upload/1Zh37B%20data%20sheet.pdf

So I'm wondering if there's anything fun I could build with them? Could I make a boost? What about a drive? Or anything else that could be fun?

What do you think?

[PRR]

Of course you can "do something with them".

Fun? IMHO, the tube is the smallest part of a system. You need lo-V heater power, hi-V plate power, several resistors and caps. Getting an unfamiliar tube to "work" is non-trivial; getting a strange tube to "be fun" is more work.

Tubes are cheap. Find a "fun plan" and use the tubes it calls for in a way someone else has already tried and liked.

----- It's so cold here that I actually started to derive a possible operating condition suitable for guitar work, but there is too much un-known about that tube. It is strongly oriented for 45V or 90V supply; the natural self-bias by the DC filament works-out for such use. Trying to work it down around part-volt clipping under 9V supply gets into teeny-weeny bias voltages and unspecified contact potentials.

[trad3mark]

Yeah I know I need stuff like heater supplies and caps etc! I've built tube pedals before. A nixie smps and an lm317 will cover that. I was moreso hoping for suggestions like "why not look at this pentode boost?"

I'm actually looking to see if I could use it to make a transformerless reverb, but I'm not that ambitious just yet!