Tube Integrated Amp for Dynaudio Focus 140

Looking for suggestions for Tube integrated amp or hybrid integrated that will be a good match for my Dynaudio Focus 140 speakers. The speakers impedance is 4 ohms, sensitivity 86db. Budget around 3500.00 to 5000.00. I mostly listen to rock, jazz & blues. I have always owned solid state amps and was thinking of switching to tubes. I have done a little research and it seems tubes amps require speakers with higher sensitivity ratings compared to what i have. I checked stereophile recommended components and the absolute sound editors choice, and found products from Unison Research, Primaluna and one from Audio Research that fall within my budget. The power ratings of those products range from 35,40 & 50 watts per channel. Not sure if that is enough power or would a hybrid be a better choice.

Thanks
Brian