Quickly delivered. Thanks for that. Pcb conditions seems good. The parts that soldered seems doesn't meet the expected type and quality. For example there should be some tantal capacitors in the circuit but doesn't exists in the package. All capacitors are simple electrolytic. You must consider that. Also, I'm not sure if the parts are original. The tolerance of the resistors (should be %1 according to original schematic), the originality of the capacitors and transistors used makes me think. I think just buying PCB and soldering the original parts from a different place would be a better choice for sound quality and meeting expectations.
I just packed up all the box and there is a little hum noise. Highs not really listanable. Actually i think it gives not more than 10khz. I don't know why. I consider that change all the parts with the originals and try it again.
Quickly delivered. Thanks for that. Pcb conditions seems good. The parts that soldered seems doesn't meet the expected type and quality. For example there should be some tantal capacitors in the circuit but doesn't exists in the package. All capacitors are simple electrolytic. You must consider that. Also, I'm not sure if the parts are original. The tolerance of the resistors (should be %1 according to original schematic), the originality of the capacitors and transistors used makes me think. I think just buying PCB and soldering the original parts from a different place would be a better choice for sound quality and meeting expectations.