This is one of our 300B amplifiers, in class-A single ended design. The final tube is Sophia or TJ Full Music 300B mesh-plate. The driver tube is the famous mini-triode from Western Electric, 417A, which has nice details in high frequency and speed. The rectifier tube is 5U4G from the old worlds stock.
The output transformers, interstages and chokes are by Lundahl, and we utilize our in-house power transformer. (SOLD, Rp. 20.000.000,-)