low power tube audio

[jim]

I am a ham radio operator and I am building a speaker box for a FLex radio (Software Defined Radio) that only has headphones out jack.  I can buy small cheap amp modules fromParts- Express and others that would work great  but I would like to build a small tube amp for clean audio output with 1 or 2 watts out.  The box for a 5   1/2 inch speaker would be quite deep and there is room.  I have clean 12 volts DC ready.  Is there a circuit I can use for 12 volts DC?  Thanks, Jim  WA3RYT

[shooter]

here's a start
there's also a 1/4W by PPR somewhere but it's early n my coffee calls n......KAZI-3542 (my 'ol CB #'s :)

1 watt 5E3 Deluxe & Micro 5F6-A Bassman & 1 watt Marshall (el34world.com)

[PRR]

A tube at 12 Volts is barely headphone power. Tubes don't make most radio programs sound better. Throw in a LM386 for a half watt which in a good speaker is plenty for a kitchen radio.