Get a used 302B and get someone competent to change out the rectifier diodes, the 1st stage filter caps to Panasonic or Nichicon, 2nd and 3rd stage to Solen or VALAB, then coupling caps to Russian FT-3 0.22uF, then ultimately switch to triode mode (and be careful taping up the transformer wires).
A total of less than $1k investment will get you an absolute world-class tube amp that rivals the absolute best. And believe me, 30W's of good triode power is better than 175W of enriched class AB ultralinear.
A total of less than $1k investment will get you an absolute world-class tube amp that rivals the absolute best. And believe me, 30W's of good triode power is better than 175W of enriched class AB ultralinear.