u/Every_Use_5550

Image 1 — First Homemade Amp!!!
Image 2 — First Homemade Amp!!!
Image 3 — First Homemade Amp!!!
Image 4 — First Homemade Amp!!!
Image 5 — First Homemade Amp!!!
▲ 114 r/diytubes+1 crossposts

First Homemade Amp!!!

Hey guys this is my first amp. It's a MarkIIC+ with a couple changes in the circuit it's got independent controls for the 2 channels except for presence because it didn't really seem to make sense to me when I was designing the PCB it's a 50Watter with 2 6L6GC. For the first 2 preamp stages I've used 2 triodes in parallel because they reduce the noise of the stage by the squareroot of 2 which in the first stages is pretty interesting because it lowers the overall noise of the amp by a lot. I've used this same noise reduction tecnique in my thesis so why not use it here too. The pcbs have a couple of small mistakes but nothing that compromises the amp functionality I just had to wire the channel switching circuit and the Master pots the other way around. The EQ is mostly smd with gyrators instead of inductors because the inductors are really hard to find where I live. I havent installed it in the cabinet yet because some screws are missing but the last photo is a mockup of how it will look once all is done.

u/Every_Use_5550 — 9 days ago