I finished the building of my first (ever) electronic device! Just possible because of Stephe (skunkie) plans and YouTube playlist. I tried a different aesthetic approach with small (theoretical) technical impact, and I can say that my worst fear was the impact on the sound quality. As far as I can evaluate, mainly comparing with my Willsenton R8, the KT120 have noticeable better sound to my ears. The KT120 tubes I have are the “bad” ones, and I’m tuning the TP-TP mesure to 0,84 volt. I can’t mesure if this impacts on the sound power. I send some pictures below: