(image of an Edison Triode 300B)

Thank you for your honest reply. The low power is a problem. Or, maybe I should say put it another way, If i get a zen amp, my speakers would be a problem!
I would really like an amp without any feedback. I might buy a zen if i find one used at a reasonable price. Would be nice to have a tube amp and a pair of bookshelf speakers in the bedroom.
/Peter