Hello. I am new to DIY audio and I believe the Hood 1969 class-A amplifier is a good place to start off due to the ease of construction. I am currently taking an online course to KiCAD like a Pro.
I believe the challenge right now is to find the modern counterparts for the transistors. So far I’ve got three alternatives which I am comparing with the specs given by Hood (I have discrepances on the open-loop gain, output impedance and THD, but I haven’t figure out the reason yet).
However, what I would like to do is to select the definitive transistors to build the amp. Does anyone have experience with this amp?