Looking for a complete DIY Tube amp

Hi everyone,

I'm looking at a complete great AMP to build and to link with a Logitech squeezebox duet via RCA.

i was thinking about a tube amplifier (stop me if the asociation: Squeezebox & tubes is not a good idea),
between 100 & 300€ big bang for the buck.
that can be shipped to France
mainly for beginner (i've done so far the Objective2 headphone amp with success, and plan to do the SUBBU DAC V3)
where only the case would have to be purchased afterward (or included).

If this post has maybe already been raised, sorry for the duplicate.

Thank you for your help and advises